It's typically a feminine thing to do. Most women have pierced ears, while most most men do not. Are there exceptions? Of course and there always have been, but the overall trend is divided by sex, with ear piercing usually reserved for females in mainstream society.
I would only allow a hypothetical daughter (I have a son only) to get pierced ears, and even in that case, I would only allow for one piercing per ear. No pierced ears for a boy, and no piercings in other locations for either sex, or any tattoos, while they're under my roof. I also require my son to have a neat haircut, to shave, and to wear proper clothing. I have standards - go figure. If he doesn't like it, he can rebel on his own dime once he's a fully independent adult.