I think it would be probably better if the world was destroyed, but it depends on if humanity's long term consequences on the whole universe. Or... whatever becomes of what we call humanity today. Gun to my head, I would guess that evolution produces evil because survival is the ultimate deciding factor. You don't get goodness through that kind of system, just fakeness and evil that masquerades as progress and goodness. That's the short answer for why things are so bad and continue to be bad.
But the real bad news is that it's probably impossible for the world to get destroyed in any deliberate way, because it would instead appear as selection pressure that only kills off a huge majority of life on Earth, and then "big winners" emerge from the wreckage. These winners won't be good, they'll just be survive-y. And that's the whole problem. Things get more and more survive-y with time, and that... just isn't good. It has very little to do with good. I've thought about this daily and obsessed over this problem for many years, and there's no solution I can see so far.
The best thing you can do about problems with no solution is to let them go.