Man, you have hit on an important issue. I don't think the attraction is
directed at the adult body at first. I think they enjoy our smile, our personality, our friendlyness, etc, and desire the attention we give them.
I believe we would have to be completely void of hair from the nose down, and be in pretty good physical shape to even keep their attention with our clothes off.

[EDIT - I am getting tired of having to do this drifter. Inf.]