Let me tell you a little story.
This one time I was out hanging and ended up finding a sweet little game of 9 ball. It was in a cramped, old billiards hall that had a few pool tables and a really cool vibe about it - dark and smoky with the classic stained glass lighting; this was a ways back remember, nigh on 60 years now. Me and some boys start playing and before you know it we're deep into teh pockets. Anyhow, I'm about to take a shot and this dude bumps me. I'm pissed but I let it go, writing it off as an honest mistake. Few minutes later however, same guy does it again, nailing me right in the hip. Fool me once, etc., etc., so I told him to watch it when he's passing people. Buddy starts mouthing off to me about being "the king of the streets in this town back in the day" and all kinds of weird, superfluous crap so I says "Hey! I don't need your bullshit you clown - watch yourself in public." The bastard throws a low kick at my leg and ends up toe punting me in the calf. While it had no real effect on me physically, it made me see red and I lost control. I did a kind of a step-back/switch-stance combo and turned around super hard with a spinning back kick and hit dead center in the chest, knocking the fucker right out of his wheelchair and on to our pool table; when his head hit the table it brushed against the 6 ball which in turn sank the 9 in one of the side pockets, winning me the game.
What's the point and why am I telling you this? The point is, no matter how cool your acomplishments and finishes are, it's really never cool to beat up unhealthy dudes.