I think humans becoming immortal would be awful. Think about the people who would want to live forever. Awful, bigoted old farts in government would never die and progress would stagnate.

#science

I think the reason life is so beautiful is that it's not permanent. If we were immortal, I'd imagine we'd actually be slightly more sane, less greedy and hateful. We wouldn't even be human, we'd be ufos or smth crazy lol.
There are lots of things I thought would be cool to do, but I never had the chance to attempt, like learning how to play the guitar. If I had unlimited time, I'd get to do all these things.
I also believe there are enough people who'd contribute in meaningful ways to humanity as a whole. Bad people tend to meet a bad ending eventually.