Sure, there could be a god or multiple gods out there doing things. Do any of the many previously documented ones fit your fancy? If so, why not any of the others? If not and you have your own, what's wrong with the ones that already "exist"? It seems to me that we've all been wrong many many more times than not (if we've ever not been wrong), so it's highly more likely that any god followed by a human is imaginary.
And with evolution, yes it's a collective pool of research in an attempt to answer the how of everything instead of the why. But why? Why is such a vague and open-ended question that it becomes more and more complicated the more you ask it until you're left with only one (two) option(s): I don't know (god). How, on the other hand, at least leads us down a path of tangible evidence and graspable concepts.
On atheism, you make some assertions that don't really add up. If I'm atheist, then I must believe life is a disease? Is it still a disease if I'm not atheist? Can atheists see life as a feature instead of a bug? And I don't see how atheism debunks itself. It's more of a stance that there's no sense in believing in a deity when no one can ever agree on what one really is or does.
Ironically, most atheists I know seem to have a rather positive outlook on life. Most theists too. Sure, we all have problems, but we all like to laugh, we all like to socialize, we all like to see good things happen. And not one of us will expect to see it rain ice cream (but how amazing would that be!!??) or body parts (but how amazing would that be!!?? j/k).
But all in all, I enjoyed reading your post. It's good to get other people's perspectives on life. Kinda helps keep everything real.