There is no inherent meaning; everyone must find their own.
For me, it's to try and leave my little patch of the world better than I found it.
There isn't one. At least one that you have a say in. Your purpose is to be a part of nature as you always have and always will be. Your purpose right now is to conduct yourself as you are, since that's how nature made you to be. You will die, as nature has purposed. You will be re-used as nature has purposed. You will never again be in the natural state you are currently in, but you will always be a part of nature.
Reflect frequently upon the instability of things, and how very fast the scenes of nature are shifted. Matter is in perpetual flux. Change is always and everywhere at work; it strikes through causes and effects, and leaves nothing fixed and permanent.
The only constant is nature. If it has a purpose, you have found yours.
The question doesn't even make sense. You have to redefine it to "purpose" or some other word to even get started. The only literal interpretation is "what does 'life' mean?", which is just something like "a metabolic system capable of Darwinian evolution".
There isn't one.
The fact that any of us are alive at all is a cosmic fluke.
You can try to make one if you want but it'll only hold meaning to you. Isn't that good enough?
Biologically: grow up, have sex, take care of and teach the next generation.
General: Nothing, there is no underlying meaning to life.
Aspirational: Improvement, the meaning of life is to improve the world during your life.
Capitalistic: Aqquire wealth, get the high score!
To seek meaning and truth. Its a journey to a destination you will not reach as it is about the journey.
I think we should qualify the question. I think I'd like to hear a reason for society as a whole to exist that is reasoned and has a firm basis in logic and has no emotive or circular reference.
Because I cannot see the point of it (and I've been accused of being a pessimist, depressed and worse for expressing this opinion). So, I would really like to hear an actual reason for us all to be here.