If you can make more money from removing tattoo's I'd say go for Tattoo removal. Or do both.
Personally I could never have a tattoo, I hate them. I have no problem with other people having them though, some people look cool with them. Much the same way I looked cool with long hair years ago (or so I probably thought...).
"You used to be able to disagree with people and still be friends." - Clint Eastwood