I think I’m about to give up the idea of getting a new tattoo. I’ve decided so for three main reasons:
1. I would never find a suitable font that I could keep for the rest of my life.
2. Even if I choose Helvetica, after years the kern of it would look discussing!
3. I’m not choosing a symbol, because...this would make things even worse.
This poll at noisy decent graphics shows that I'm not the only one having trouble to decide.