So many possibilities! So little time!

I already read or heard of most of those theories.

The natural disasters look interesting but whats more probable is that we are just going to kill ourselves in some sort of war.

Yah, I agree with the whole "we're going to kill ourselfs" theroy.
HOWEVER! If we survive that, (and long enough for that matter) two theories seem really believable.
(To me at least.)

- The one about the Andromeda galaxy slamming into us. (WOOOMM!)
- The one about the protons inside the very molecules we are made of dying. (......!)