I don't know why people put so much emphasis on the importance of a tattoo. Sure it should mean something to you, but it's not this life-altering thing. If it appeals to you and means something to you at the moment, get it. You only live once, claim your body as your own and do with it what you will. If people judge you for it, fuck them.
I love my English 102 class for this reason. The topic of the course that I chose is inquiry into body modification, so this sort of discussion takes place every other day. It's amazing the things you learn about the social implications and personal implications of body modifications.