How come most western women are vain?

You've clearly never been to Japan or South Korea if you think female vanity is only a western thing.

Western media which drives women to look very skinny and have perfect waist to hip ratio. This is the reason why western white women have more eating disorders than Black women. There was a time when beauty standards were realistic (women were expected to look quite fat) and now skeleton females are being worshipped.

In non-western countries, chubby women are considered hot. In some countries like Japan, women are following the western media and starving themselves to death. 

They see the TV and think no one looks as bad as them, but they have to realize those ladies are so pretty because they come from the whole world to try to me the one special girl, which is a hard job, but they aren't the only or even the best for our little guys, who are so super smart and sweet and special. They are special guys, no matter what, every single day, no matter what. We love you guys. We love you every day, all the time. Special guys.

How do you know most western women? What about them makes them more vain than women in other cultures? I work with ppl from around the world. Even women in Iran who wear hijabs often cake the makeup on and spend hours on their hair. And let's not talk about men and their delicate (and vain) sense of masculinity. 

Because a lot of men impose impossible standards on them.