Actually westerners do these type invasive plastic surgeries far more frequently than Asians (apart from the South Koreans of course). Don't let stereotypes twist your perspectives on things. On the discrimination part, as they say what doesn't kill you makes you stronger. My opinion is that there are way too many Chinese brain drain and financial drain going into countries such as Canada and the USA, why both those countries are still a popular destination for the rich to emigrate there is beyond to me.
One word: Opportunity.