It's just as title says.
Different people seek different things(money, big family, fame, ...etc), but what is the best thing one could think of, and on what standards is your opinion? What are your reasons?

Life offers more than just monetary items or frivolous goals such as fame. It offers life itself, from that point on the option to make decisions with or without ramifications thus leading to various other steps. With that being said, life offers whatever we make it to be, through our own personal decisions.

In my own, humble opinion I would have to say love.

Life has been absolutely amazing since I gained that. I'll never be able to go back now.

@Stant: Love is quite filled with uncertenities, it doesn't always last, it doesn't always go smoothly without any objection to stop it from flourishing. I highly doubt that love is the best thing /i can get from life, among all the happiness it may give, a lot of sacrifices should be made too and not everyone is willing to do. But I never tested love or made a priority, so I don't think my opinion makes much of importance.

@Lucid Nightmare: Decisions are not made easily, they are subjected to sacrifices, sadness, loss and other things that are deemed negative.
Also some decisions we are forced to make not according to our own will. Decisions may be regretted later, and as you said every decision leads to several other steps which each one of them may be subjected to regret, such a thing is quite depressin I believe.

What is the best thing life can offer me? My family for a start then my friends and I will agree with Stant, as I do too think that love is alos one of the many great things lide will ever offer us. But nothing lasts for ever. Not even life itself.

I see the right that my answer can stay the same like it came into being at the encounter of the question.It would do, due to the fact that as well as a great amount of other truths, this one needs to be discovered by each person individually to realise its obviousity. Its naturalness.
But despite it, my answer will differ.
In no way it is caused by the change in the initially supposed character of the question which now seems to impose the necessity for the answer to be enclosed within practical choices.
This alternation doesn't change anything.
Whatever question arises, the answer is love.
Inconceivable power which holds within its form all the other keys to perfect life.
Hope, faith, trust.
Mighty and influential forces who even such creature as a human isn't able to comprehend and imagine.
Successful, satisfying, the happiest within every second of one's life, although so far from experiencing their enormous power.
As long as one lets it conquer their thoughts and actions, they will never lose against life.
The universe of human's soul is on their side. Unites and mobilises all the good dispersed on the world to pour happiness into our minds and bodies.
Life teaches us to turn into sceptics, and growing we convince ourselves we are happy and safe with this boundary we impede our development of spiritual maturity.

Love isn't created by a human but it bears itself again to show them even greatest power when a human discover it within themselves.
Love is inside every human but it is not in their possession.

While love is searched for due to many reasons, its revelation and development doesn't reach the state of love if one is not ready for looking for it first in themselves, then alternatively also in the others.
It expires before it manages to thrive properly. It dies, never adopts different form, nor starts with feelings that may kill it.
For many love is looked for by the values of body. It doesn't require much to know what the body is made of. It can't be called an effort to find out about it.
Those valueing pleasures of body's offers never has managed to discover, to experience the spiritual ones.
Soul enriches all other categories of life like a superfine spice to a meal.

It all comes down to one choice from the all possible answers.
It isn't love but this that we, humans, were blessed with something as wonderful like the possibility of reaching such point of realisation.

I would say Life itself.
Logically speaking, you cannot experience what anything or anyone has to offer without being alive.
I appreciate everything else that I have been afforded, but nothing can top the gift of being alive itself.

I have seen a lot of examples of how strong lve is, but also saw examples of how love got destroyed by the simple reason that their lovers look is not satisfying anymore. It's true that love which raises to a spiritual that makes shallow issues like looks is of no importance and hold no existence whatever happens, but I think the main reason to reach such a degree is to have satisfaction and contempt, that is in my the best thing life can offer.
If one have this belief to be satisfied with what you face and challenge then there is nothing to stop him, his progress will continue never stop especially in a spiritual degree.
But still this idea can change according to what experiencees I may still deal with in the future, but I guess even if I experienced the love everyone is proud of, my vie will still be the same, since I prefer to rely more on my mind and care little of emotons, even though negative may seem.

If love has its birth between two people, then the state in which it is called "love" won't survive nor develop to absolute state (the state in which it leads a human's life. And when it is a leader, the course of one's life cannot go in other than successful way. Its influence don't come down to shallow matters such as the only trifling ones but comprises aspects of work, money and whatever else "significant" matters a human pays attention to) without continual mutual contribution.
If one component (a person) stops fulfiling their role of being a component of love, the equation is ruined.
That is, the number 1 has to be number 1 just like the 2nd element.
Without this characteristic, the result will no longer create number 2.
The equation stops exisiting bacause it is stops being correct any more.
Don't decribe love as a thing to be proud of because it makes it being a possession of human.
One isn't able to conquer forces are far more powerful that they can imagine, and which they didn't create.
All they can do is to kill them within themselves.
Love isn't a riddiculous emotion or a feeling which gives satisfaction as long as one is fed with them by the other person.
It is a state of spirit.
Emotions only intensify body experiences.
Mind is limitted by the boundaries a human creates for it. Love exist beyond it as long as one doesn't believe that something as abstract as love can bestow greatest gifts than a human experienced by aiming for self-satisfaction. This is one of the boundaries which makes one apparently safe and strong however also keeps one within the fenced area, which they hided their little world in.
Spritual development makes one going beyong the fence, and enlarging the area they know.