I would never in my life damage another drivers vehicle for any reason.
Same. People suck but at some point you need to be the bigger man. Things happen, life goes on. Atleast you seem open to the fact that you may of done something to him to warrant his needless response (regardless if you intended too or not). No matter what people say on this site, we all at one point in our driving life have done some (even if accidental) that was dangerous on the roads. Too many distractions, all we can do is learn from it and hope to be better next time.
this guy would have kicked the shit out of me.
Even if not what would it have proved had you kicked the shit out of him. It could have resulted in criminal charges as well.