I've ran across this many times and tonight I was running a hm and we had a commando healer who was just healing himself and let both me(dps) and the tank die 2 or 3 times before I called him out on it and left the group. I called him out on it and he immediately starts raging telling me that it's my fault, that I was on the wrong side of the mob, I was too close etc etc. Yet he didn't attempt to heal even the tank at least once only himself.
Why is it so hard for people to do their simple job properly and if you proceed to call them out on it it's your fault especially if you play dps. Does anyone else experience this?