>Touch feels nice, but as an American man, I was taught to touch only when necessary, lest the other person find it over the line.

What? You must not watch sports then. High fives. Butt slaps. Chest bumps. etc. In fact, we might even say that there's a big problem with men inappropriately touching people, just look at the next potential Leader of the Free World, they both have a reputation for inappropriate touching. If you can be President of the United States while also "Grab 'em [women] by the pussy", I think we're being taught as men that we can easily get away with inappropriate touching.