If you live in the states, then that's why. People (including women) there have gotten too lazy to actually put the least bit any effort into looking good, or unique, and just go for the easiest, convenient setup. And when you do try to suggest they try something different, you're typically greeted back with a "FUCK you I dont have time for that shit 'n if you dont like it then bla bla bla" Everytime I go to Japan (inb4 weeaboo), I see a myriad of cute hairstyles just like in the anime. It's not just hair either, fashion all around, but since this isn't /fa/, I'll stop here. I don't know about other countries though.