I think something that gives life meaning is to discover and live up to one's potential, even with the full knowledge that our potential is almost certainly less than someone else's.
I will probably never write code as well as John Carmack or compose music as well as John Williams, but that doesn't stop me from trying. And it is fulfilling.
It's the drive for personal growth, known as "self-actualization". It's an interesting topic to think about, assuming an AI order of magnitudes more evolved than a human brain, what would its drives and motivations look like.
But then I go and try anyway. I'm not even really sure why, but I like doing it.