Just to clarify something Brian...
If a tattoo is NOT visible, the person is ok, of it IS, then you would rather not interact with them. Or just the lack of knowledge of it being there would make it bareable.

How about being served by someone you KNOW has a non visible tattoo?

Just to put a point to anyone who says "think what you will look like when you are 70"
By 70 I expect to be quite wrinkly and not particularly pleasing to the eye. With veins popping out and any other skin conditions, what difference will a wrinkled tattoo make

At the end of the day, we are all entitled to our opinions. And I respect each persons feeling on the matter. But catagorising people for making a choice is a little lame.
What next, facial hair, clothing choices, crooked teeth?