I was always under the impression that I played games to enjoy myself, but DMC4 made me change all that. Because when I was playing it I wasn't actually enjoying it, and I spent the last two stages of the game shouting, punching things, gnashing my teeth, stroking and passing in and out of consciousness.
I've played difficult games before, I managed to beat Ninja Gaiden without ever getting this angry. Something about DMC4 is just that little bit to irritating to let slide, maybe it's the absence of a story? Maybe it's the laziness of the whole thing? Maybe it's the fact that the timing windows for certain things are just that little bit too small that it passes over from being challenging into being pure diarrhoea.
Or maybe I'm just not cut out for this kind of thing anymore.