Tattoo's

Why are tattoo's so addicting?

Everyone I know that has a tattoo is always talking about how they need another one, they can't wait to get another one. I don't understand why they feel the necessity to cover up their body in ink. I mean one or two is fine, even three is okay but to have you whole body covered is beyond me. All I can think about, when I think about actually getting one is, when I'm older how they are going to look. When I'm in my thirty's and having children and when I'm in my sixty's or seventy's when I have grandchildren and my skin is not as young looking as it used to be; How will I look? However, I'm not trying to put down anyone with them, it is just my opinion, but I do believe they should have a limit.