Yo! I am new here

[Andromeda18_]

Well in nature, for example, worms, can choose what sexuality they want to be at any given time. If there are too many females, then some of them will switch to male mode and keep up the worm race. I think the same would eventually happen, evolution, if an all man world were to come to be, I think some of them would eventually become women because nature has a funny way of balancing things out.

That's because worms are hermaphrodites. A worm is both female and male and even when two worms are mating they're still male and female. Each has an egg and they exchange sperm.