If someone touched me in any physical way at work I'd say it would be unwanted. It's pretty reasonable to not want other people to touch you, no matter the specific "kind" of touch it is.
Every now and then my boss gives me an overly-friendly shoulder pat. It really annoys me, I guess I'm a victim of physical harassment. Should I leave the industry over that?
What would you do if you had 8 bosses in a row all do the same thing?