Again, it's not always about being self conscious. Some woman merely LIKE larger breasts, and thus should not be told what they want to do with their body is "a shame".
What gives you the right to say what is right? It's body modification, it's no different than piercings or tattoos, it's just a bit more risky. Many people are into that sort of thing, if it makes them happy let them do it, they shouldn't be shamed for it.
is just.. not always about being "pretty", but about "personal" preferences. I see you're a furry, how would you feel if someone said "Dressing up in a fur suit to be someone you're not is sad really. They should just be happy with who they are!". It's the same thing, surgery is just a tiny bit riskier.