Lady Pi Phi-- My mom isn't thrilled about mine either, and I am 34. LOL. Her 55 year old best friend, however, thinks its the coolest thing she's ever seen.
Which is why I let Linda in on it before I got it done.
Oh well. They are our bodies, we will live with our choices. Personally, I don't think I will ever regret mine, because, like you said, when I am old and wrinkled, the only person looking at my back is gonna be mr amycat. And he has a tattoo of his own that will get old and wrinkled too.