<human>: First, I know our ages and the short length of the relationship so far make this seem unimportant, but I really just want to be able to better understand how she can have a respectable reason for wanting a second tattoo. 

Her first tattoo is very meaningful to her and reminds her of a short good time during a very dark period for her, so I can at least accept that although I dont like tattoos (the idea of them that is, I can appreciate the aesthetics on some people) it's at least for a good reason.

The next tattoo she wants to get on her butt simply because she likes how it looks, and this I am having a problem respecting. I know I have no right to say she shouldn't if she wants to but that doesn't help me respect her more for it, which is what I want to focus on.

Most of my problem is that I've just always disliked tattoos, I dont even have a really solid argument against them, I know many employers will hire someone with tattoos no problem, and it would be easy to hide if necessary. I just can't get past the idea of decorating your body permanently with something that seems really great now especially at such a young age, I certainly wouldn't trust myself to decide what kind of tattoo I would want and she is my equal as far as maturity. 

Another thing that bothers me is that the reason she got her tattoo at 16 was that her dad (who is the opposite of a good influence and by no means what I'd refer to as a stand-up guy to put it lightly) has always told her that she could get a tattoo if she wanted to when she was 16 and he has a bunch of tattoos, so I almost fear she partly wanted to be like her dad, which is not a good idea.

Can you condense the text into three sentences or less?
<bot>: please help me understand how my girlfriend can have a respectable reason (beyond it's her body her decision) for wanting a tattoo just for aesthetics (important distinction: aesthetics not art)