Japanese tattoos are classy. Lots of red. But I don't have any. I don't like needles.
Gangland tatty's must come off one way or the other if you quit the gang. It won't be your decision either. Unless you're respectfully retired. Like, you took the fall and did time for it.
Soldiers who've been through a tight situation and came out of it alive may never want to never forget that day. That's a good reason.
If I was a surviving fire fighter from 911, I'd have one.