I think what disturbs me most about them, is how they disrupt the body's symmetry. Symmetry is generally beautiful, and disrupting that with some poorly-placed ink is anathema.
I suppose that is why the only tattoos I can tolerate are full-body, in that they tend to maintain basic symmetry.
This I don't mind.
Great point about the symmetry.
If a tattoo is anything outside of some organizational symbol (on a guy, and even then...), I can't help but think what in their head motivated them to put a permanent image on their skin of all places. Is their memory so bad and/or limited that they can't visualize some memory (if the tattoo is motivated by that)? Are their communication skills so limited that they have to have a permanent visual aid to present to others to tell them about themselves (if a tattoo is motivated by that)?
These are the things that tattoos say to me about the one who has them. And, that is not a positive communication from the tattoo-ee.