Yes, but evolution isn't 100% either
Let's say every couple get 2 kids. That's 1 kid per person.
Let's say 50% of the population is stupid and don't use a condom.
Let's say 10% of these stupid people get AIDS
Let's say the original population is 10000 people.
That means 500 people contract AIDS, which gives them 500 kids. If 10% of these kids get AIDS from birth, that's 500 stupid people gone, with only 450 surviving kids! So after a couple of generations, all of the stupid people will be gone! Or at least be a minority.
This is, obviously, very good for the world, as it have way too many stupid people.
A world that can suppress the urge long enough to eliminate a disease like HIV. It's more impressive than this one.
The problem is everyone thinks about themselves and not the future of the little people.
It's true that we're overpopulated, but as individuals it's ok for all of us to be here. Who are any of you to say stupid people should die.
Sounds like I'm talking to modern day Nazi's, or some force of supremacy.