This is all entirely society's fault.
You grow up with airbrushed pictures of celebrities in magazines, thinking that might be real. You see them on TV and in movies with a large-budget makeup department, thinking that's what they actually look like.
They have surgery to try and protect what they do have, improve what they're lacking, inject what they're missing. And each time they do, the cycle repeats.
It's ingrained in your brain from the very moment you're born, so it's inevitable that some people have skewed images of what a woman should or shouldn't look like. As a result, women go nuts trying to reach unattainable goals and men never settle because they're always looking for something "better".
If people stop buying glossy fashion mags, the editors will need to find a different way of getting people to buy it. It's sort of self-sustaining, isn't it?
We all have unique tastes anyway (as this thread has shown with it's big/small discussion), so it's a shame that these are further messed up by unrealistic ideals. Most of the women the world claims are beautiful I'm not really that fussed about.