I don't have a problem. I'm perfectly happy to accept people regardless of what they look like.
Furthermore I don't see the
need to get the two groups together to have a 'discussion' about it, any more than I feel I have to question people who dye their hair colour (which is zero). What exactly is there to discuss? Why you think they have poor judgement? I'm sure they'll be well up for sitting down with you and trying to alter your vie that is purely based on their looks
What someone does to their body is of no business of mine, and as long as that makes them happy I'm not sure why anyone else should either.
To be honest I'm absolutely gobsmacked that your only answer is to get the entire human race to sit down and let their opinions of tattoos known because you don't like them. If such an avent was to ever happen, I'd hazard a guess that more pressing matters such as war and famine would be top of the agenda.
Sight is amazing isn't it? Some people are willing to judge people on how they look so easily, yet if they were to lose their sight tomorrow in an accident they probably wouldn't give a second thought to ask the person that looks after them what their tattoo looks like.
I'm still waiting to hear evidence of your link between people having 'bad judgement' and a tattoo. A doctor I speak to regularly who has spent the majority of his life in a lab doing ground breaking research into cancer and genetic disorders has several tattoos. Bad judgement is the last thing I'd ever accuse him of having.