What do you think of girls' nail polishing?

As a boy, I think girls paint nail polish mainly for themselves, and their good mood will get better, followed by other girls. When other girls praise their beautiful nails, they will be very happy and have a topic. As for boys, I don't think many boys will notice what nail polish girls wear unless it is intentional. In my words, for so many years, except for female tickets, I never noticed whether I painted nail polish or not.