It must be a age thing. The last thing I want to do when I'm playing a SP game is chat to anyone. I want to be immersed and play, not talk about crap with some dude. In my day we had phones and we called people when we wanted to talk.
I imagine the 360 player base as a bunch of 16 year old boys all talking about girls at school and calling each other gay as they play games. I never used party chat in the five years I had a 360 and hardly ever hooked my mic up for MP, I had no reason to ever talk to the scum of the Earth. I also muted everyone ASAP. I do the same thing on the PS3, I don't want to hear people breathing or yelling at people in their family or just yelling because they died.
Basically I hate other people.
Now playing: Bloodborne
Recently Finished: The Order: 1886, Dying Light
PSN & XBL: Scuzzlebutt33