For me I like them and for how I was reading some of the posts saying they don't like girls with tattoos or piercings. I prefer a chick with tattoos and piercings for one reason. At least I know she is not no wimpy little girl then, but that's just me.
I just got mine done and I love it, it hurts but it's easily tolerable. I got it on my left side and sleep on my left but it's no problem as long as you don't move too much when you sleep. You should get one
I think it's what you think about them that counts because a lot of people don't like that stuff. I find it a bit strange myself, however, everyone has their own opinion. I would say that you should do what you like to do and not worry about people's opinions. If my girlfriend had that done, I would support her in her decision because if that's what she likes, then it's cool with me!