It sounds like a fetish to me. Some people are obsessed with feet of legs. I'm a neck person myself. I don't go out of my way to touch people though but two each is his own. I wouldn't read to much into this. I think maybe the way you were addressed about this as a child has triggered it even more than it should of. We all have certain quirks about us. It doesn't mean we have to go analyzing ourselves to death.

My answer? Neck fetish. Nothing wrong with that.