The only reason I have no tattoos is because I've never found anything that meant enough to me, and that wouldn't eventually fade. Not fade in the literal sense, but things, they come and go. I don't even feel much like the person I was five years ago.
But I'm thinking now that if I were to ever get a tattoo, it'd have to be something that would just remind me to never take things for granted. It's so hard. And that's one thing that never changes.