AuraSeer said:
Any DM who orchestrates a TPK with CR3 monsters is not exactly a wimp in my book. A bastard maybe, but not a wimp. 
I once had a DM (just last year) that set up an encounter in a town with a bunch of mercenaries attacking the PCs.
I was running a wilderness character who had no clue about how to act in a town. He had never been in a town (and had an Int of 6 to boot, he was a basic lost child in the wilderness character with a very detailed background explaining it).
So, when we went to the mercenary headquarters to find out what was going on, my naive character attacked the two guards (in the same uniform) outside when they started to give him major lip. Every town combat encounter the DM had run was teaching this character that you pulled out a weapon and bashed heads in this world, usually with no provocation (my character had gotten attacked and captured by solders, attacked by a press gang, and attacked by these mercenaries, all in town environments where we just were walking down the street at the time).
I was roleplaying my character by attacking the enemies of my family (until meeting the PCs, the character had only known two people before). The DM thought this was inappropriate for a CG character, so he immediately pulled dozens of enemies out of the surrounding woodwork (as if there are just dozens of mercenaries just waiting around every corner for a big fight to break out, but weren't there when you walked up the street a moment earlier) and basically said "You're dead" (two PCs had fled, one got knocked out and captured even though no dice were rolled).
When a fellow player asked why the DM did not play out the combat and give my character a chance at escape, the DM answered "It's not worth my time."
So, I stood up, said "This is not worth my time" and walked out the door. Only time I ever did that in a game. Now, that was a bastard DM.
