I look at this way ... there is an enormous amount of planning and dedication by the wearer to undergo the prolonged and multiple sessions of either tattoo or piercing (or both). Hopefully these people are also capable and in the process of sharing that same level of planning and dedication towards other fruitful and beneficial efforts.
I personally swore I would never get a tattoo when I was 15 and saw an old lady with a very old and saggy tattoo.