My thoughts on elite:
A lifetime (for somebody in a developed country who survives infancy and is in a family with enough money to put their kid in gymnastics) is roughly what, 85ish years on average?
An elite gymnast will -- if we're extremely optimistic -- retire in her mid-20's. And then have another 60ish years in which that gymnastics skill is utterly irrelevant.
I say this as a former elite (albeit bottom-end elite) gymnast myself: it's not worth it. There are better ways to spend that time and energy.
Don't get me wrong: I don't regret being a gymnast or a coach. But if I could go back and do it again, I'd casually train trampoline and tumbletrak, and devote the rest of the time I spent training to school, or music, or writing, or learning another skill instead.