Why do Japanese girls like to have long hair?

From an aesthetic point of view, no matter from which point of view, girls with long hair are more beautiful than short hair. Men like beautiful women, so it's not surprising that girls have long hair.

Most Japanese girls don't go out to work after marriage and stay at home as full-time wives. Hair is the second face of girls, so they have enough time to take care of their hair. In order to make themselves beautiful in front of their husbands, they have long hair.

There is also a very developed animation industry. Japanese girls also like to pursue two-dimensional Cosplay and long hair to make Cosplay look better.

Another reason is that hair is one of the sexy aspects of girls. Long hair makes girls look sexy and slim.