I don't see rage quits often but the only time i've legitimately raged quit was when I actually had a run in with one stubborn as hell hacker in Dark Souls 1.
I was just willy nilly invading in Sens, having a good time, playing by the games standards and what not. Then this guy came into my world, and I thought to myself "ooh this could be fun!", since I'm one of those few people who love to be invaded, that and this was near the end of Dks1's run before Dks2 so I could pretty much parry the world. So I snuck up on him with my weak ninja character and what do you know!: Havel Chest, ninja flipping, with a hacked crystal weapon that is a guaranteed 1-2 shot. So after landing a backstab I ran to an area in Sens that was being blocked by an enemy luckily so he couldn't get out. Thats when I sent him messages to "leave the game, stop using means not put in the game to ruin others" ect. ect.
So after getting some quiet rude responses he finally bypassed the enemy, and my plan was to kick him off a ledge since thanks to Dks1, gravity can still kill even a hacker. But unfortunately he backstabbed me which was a certain kill. So as I was at deaths door I literally BOLTED to my PS3 and hit the power button...
It was a faint rage, but imo it was a righteous one.