I found a lot on the Hyperbole threat that I wanted to respond to, but kept feeling that I didn't want to derail it. This will probably go nowhere, but that's ok.
I'm 45. When I was 19-20, I was anorexic. I didn't get diagnosed, but I lost many pounds, my hair started falling out, and I stopped menstruating. It only ended because my dad died. And that's ok. It shocked me out of it. I see now that I was never fat.
But I also got my nose "done" (I think "Eteri" mentioned this surgery on Hyperbole thread) when I was in my early 20s. My only regret is not getting more off. But I'm also glad I did it. My old nose was big. My current nose is still big, but acceptable.
I'm not exactly sure what I'm trying to say. But in my opinion there is a place for cosmetic surgery. I've never been able to make a "rule" for it, but I thought maybe it depends if you're having surgery to get more attention or less attention. My nose job was to get less attention. It worked.