Amphoteric said:
This is a serious question. What do you think will finally kill off the human race?
Asteroid collision? Disease? Nuclear weapons? Sun dying?
I frankly have no idea. It would be interesting to see how this species does die, I think everyone would agree that this planet is better of without us.
Or alternatively mabye we'll find away to migrate out of this solar system and poison the rest of the universe.
No one is crazy enough to use nukes, and more so we've got so many countermeasures against them that anyone who did use a nuke would never have it reach it's target.
Disease is also unlikely. Humans are nothing if not indomitable, and we'd either have a few people avoid it, adapt to it or find a cure.
As for the sun dying, we've got a billion years before the sun expands to a size that would render Earth uninhabitable. At that point we've either moved to another system, or we would not longer be classifiable as homo sapiens sapiens (not a typo).
I think that asteroid collision is the most likely. Earth has already been majorly hit once, and there are a lot of things that are traveling around space. Many of those things aren't much of a threat (we get get hit by minor stuff all the time and it's got no effect) but there are a few that would be near impossible to destroy or deflect, and if one of those is in line for a strike, then we're screwed.....