What would I rather, collect garbage, or let garbage pile up in my house?
Probably I'll collect garbage.
And since I'm doing it, might as well do cooperate with a couple members of my community and clean up the whole thing.
Would I rather my house pile in shit or learn plumbing? Probably the latter. And then when my neighbor is having plumbing issues, I'll give 'em a hand.
And not everyone has to do this. My neighbor and I decide he'll take the garbage I'll take the plumbing. Or maybe we both learn both, and just switch.
You seem to forget that these things were born out of a need anyways. There's nothing stopping people from doing what they need to do to fulfill their community's needs.
It always pains me how prevalent education systems hinder curiosity and our natural love to learn.