Ha I wouldn't worry about the ccommitment unless you get it somewhere you personally can see all the time. I forget about most of mine most of the time.
I'm getting green tara (an embodiment of compassion in buddhism) with some lotus flowers, can send you a pic when I reply to your pm, from somewhere with better internet...
Most of my tattos are geeky, got the time independent schrodinger equation, relationship between angle round a circle and phase of a wave, ptolemeic system of the planets, an astrolabe, some escher style birds, a fairy and an arrow pointing to my crotch (long story, I didn't realise til after, prob my fave).