No, it is more fun this way. Accidents happen, and I do get pissed of when someone intentionally hurts me, but I am forgiving. Besides, we can't regulate all devious behaviors we see in-game. For example, I was climbing a ladder which was already badly damaged. One asshole on my team, seeing that, thought that it would be funny to wait until I am high enough, and then destroy the ladders! No penalty for him, right? He didn't do anything wrong. So we should be to quick to pass penalty if someone hurts someone else by accident.