In countries like India, most children, maybe a boy or a girl, will get their ears pierced in religious ceremony before they are about 5 years old. Even a child at the youngest stage of life may get their ears pierced as early as several days after their birth.
In Islamic religion only the females can get their ear pierced. According to them if a male pierces his ear it represents 'looking like women" act according to many Muslims traditions over history. Taking it from that point of view many Muslim cultures considered it Haram.