Suzz I hope you do it! Screw what everyone else thinks....it's your life and your body so you should do whatever you want with it!
I think it's only natural to go through little rebellious periods here and there. One thing I have always wanted to do is get a tattoo and I talk myself out of it because I think I'm too old. Now how stupid is that?! I think I am going to make that a birthday present to myself!
One thing I did finally do (despite my fear and shyness) is to start taking neked pictures of myself. I found it to be the most liberating feeling in the world! I'm hooked now and it is something I never ever ever would have contemplated doing a year ago.
I say if you want to do something - go for it!