I don't have any tattoos.
Context matters here, which the OP grossly fails to understand.
Some tattoos can be a mortal sin, while others are not a sin.
My opinion is that tattoos reveal a worldly spirit to some degree, and there is nothing really original or creative about them. They're permanent human cattle tags identifying worldly spirits of persons at the time they received the tattoos, but that doesn't mean they're still that way. There are sincere converts to Catholicism who were previously neo-pagans with tats.
When I see Gen X, Millennials and younger with a bunch of tattoos, I see a walking joke.
The old school bikers with tattoos, yeah, they were the real deal but still caught up in the wrong spirit.