Im with Ricababy, it's kind of a secret that I have that makes me feel good about myself - not everyone gets to see it!
I really like mine, I got it done a few years ago (a little bit after the trend, I think I was 21 or 22 ish?) and I don't regret it at all.
For a start, whether or not people like it doesn't really matter, because mostly it's just me that gets to see it.
And, when I get old, if I hate it or I think it's un-classy, I can always take it out. But honestly, I don't really get how it can be unclassy, if no one can even see it. For me, unclassy is showing a g-string (thong) at the back of your jeans, or not wearing any underwear when you go to a club!