Dude I know you're mad and all, I understand that. But think for a minute... beating the shit out of someone is just as bad as stealing, if not worse. You can make money back if you have a job... or a birthday... or some form of income. Not that you're gonna literally KILL him or break something on him, do something that he can't recover from, but injuries are injuries.
I'm not siding with Kyle or you, because to be honest I don't really like either of you a whole lot. I'm just trying to stop one of the reasons SR is turning into a heap of annoying children - immaturity. Kyle's being immature enough to steal money, you're being the same by trying to rectify the problem by beating him up.
I don't even know if you're serious about this. But either way, remember one thing:
An eye for an eye makes the whole world blind.