Reference:
yeah, 99% of the time your genes know what they are doing (well looks-wise *ahem* ) I may not think that they need it or even think they look better after, but I can sort of see why some folks might get a nose straightened or whatever (teeth, oh yeah,teeth, for sure) but mostly why mess about with the proportions and the colouring? Blonde Kidman looked ill, ginge Kidman looked pretty.
Agree - people get their teeth evened out or whitened, and don't think of it as cosmetic surgery.
I had the bump on my nose shaved off years ago - big deal! No-one else even noticed, but I felt better for it
But mostly I'm natural. I get the t-section of my hair blonded up about four times a year (leave the rest natural) and can't remember the last time I went out with a full faceful of makeup. ~shrugs~