Sorry, I'm not on the list above (below), but to respond...
I disapprove of ear-piercing done to babies (yes it is done around here quite often, but I'm not sure if I really consider SW Scotland as my culture ).In these cases it is being done because the mother wants it, not because the child does. It also carries risks of infection if not carried out correctly ( and even if it is carried out correctly, sometimes).
I had my ears pierced, for aesthetic reasons, when I was 18 (one of the first things I spent my student grant on ).I wouldn't let my daughter have her ears pierced until she is at least 16, and I would make sure she knew what could go wrong, and that goes for any other sort of piercing, as well. Ear piercing is nothing like circumcision, btw, it is over in an instant, and only momentarily painful, unless infection sets in. That is not, however, a reason to do it to children.
People do not shun me beause I do or do not have my ears pierced- I am accepted as a member of my Church with pierced ears, even though the majority of communicants are unpierced. Its different.