I don't have one and don't like them. I wish I were more ambivalent about them on others, because it's really none of my business.... but there you go. I think they look tacky.
I'm thinking now that it will be considered more non-conformist to NOT have a tat. We were on vacation with all the family (me, dh, 6 kids, 2 spouses, and my dad)... none of us have tattoos... and, from walking around the park on a sunny day, I think it was unusual. I felt pretty proud to be an outlier. ;)