I had a friend who was Polynesian. His tatts were there for cultural reasons. He had one that stood for family, one for clan and one for tribe. Those I understood. When he got his graduate degree in EE I jokingly asked if he was going to get the diploma tattooed on himself. He laughed and said if I did that, I can’t hang it on the wall.
And for that matter I've read that Japanese culture has a pretty strong opposition to tattoos...in Japan they're seen as an indication of criminal activity.