The meaning of life, is to reproduce.
It's as simple as that.
Again that is a purely subjective thought Pillz, there are actually people who are quite close to asexual. Does this mean they have no meaning?
So it is not as simple as that, but the common miss perception is that reproduction is our only meaning. I would believe a life dedicated to bring the human kind further, science, is also a life of meaning is it not? Even if said life did not reproduce.
The meaning of LIFE, is to reproduce. Science wasn't a "life meaning" until these recent centuries, and while it helps aid life, it also helps destroy it, so perhaps not. Asexual people who can't reproduce for whatever freak reason, like millions of others probably find their on reason.
People create their own meanings of life to comfort themselves and inspire themselves and others to live on. I plan on dedicating my life to medical science and research, though it is not the meaning of my existence.
Are we assuming only humans have a meaning of life? Or the meaning of life for everything? What's the meaning of a bear's life, or a fly? Or an ant or spider? Or a dove? Sure you could tell me Spider are meant to build webs and capture bugs, but that's what humans have defined as their only useful purpose, perhaps that's not the reason for their existence.
There is no MEANING for anything, outside of what us humans say there is. Really there is no answer, but from a biological standpoint, we are created through sex, we live our lives desiring sex, we make sex, then we have babies. We used to die soon after that happened, and now we live 4 times longer, trying to figure out what to do with ourselves in the meantime. There's 7billion of us, each of us don't have a single purpose, it's different for everyone, it's what the individual wants to do. We're going to keep having babies until there's a giant ass concentration of people doing things, perhaps furthering science, discovering the fourth dimension, figuring out all the shit the universe has to offer us tiny little peons.
Then one day all inhabitants of planet earth will be dead and our glorious past and lives will mean nothing. That day could be next year, it could be millions of years away. Either way, we'll keep on reproducing till then.