Piercings are okay - people who like them, like them and they are free and should feel free to express themselves without ridicule.
I don't have any piercings myself (and I don't intend to ever get any), but I do know several people with more piercings than just earrings. I also understand why some people might not like piercings, principly for these reasons:
1) They look painful. I know GETTING a piercing can be painful, and I also know that after a while the pain goes away, but just looking a piercings makes me feel squemish - human beings generally don't go around with bits of metal inbedded in their flesh and seeing that sort of thing instinctively reminds me of pain.
2) They've been demonised - during the 80's, with Reagan in the White House, Americans, and by extension Hollywood, dreaded the rising of gangs and violence and drug wars. Having piercings was seen as being a "gang member" who went around eating the livers from dead babies. Ever seen that movie "Death Wish 3"? Where Charles Bronson goes around killing ANYONE with more than two piercings and dyed hair? Many people still think that if someone has a lot of piercings, they must be violent or wierd. I know that's not the case, but many still think that way.