It's just an anime thing.

It's just their thing. Don't for the life of me ask why. =/ It could be worse... They could have other natural reactions...

I'm dead serious by the way. Typically we as humans don't want to be in the environment we work in nor the attitude we work in. If you get paid to be cute all the damn time, how quick would it take you as a woman to get sick of it pretty damn fast. Not to mention tolerating with a simple and giggle, all the guys perving on you. This is what drives me nuts about "Westerners" saying Asian women are perfect. Yeah, they LOOK good. How about their personality? I can tell you from experience Japanese girls 30< who have never been outside of Japan are moody, nagging, self-doubting, and controlling as hell. So pretty much just like at home only more emphasis on fashion.