Ixamyakxim: I actually used to find Modern Warfare pretty atmospheric when someone on our team would open up their mic, and I could hear the sound of the machinegun fire they were taking through my headset. Now the asshole who cranked terrible music at full blast and flooded chat with it the entire time, or the ten year old who constantly talked to the snot nosed brat next to him / her, in one long breathless continuous squeaky stream...
Let's just say there's a reason I don't use Live anymore. In a way, I'm an elitist bastard. I missed the days of limited broadband access when it was a bunch of other like minded geeks and myself plotting out strategy, teamwork and BSing. When it became flooded with 10 year olds and swearing, racist whiny bigots it got old really fast.
To you it's atmospheric, to him, it's a disturbing and distracting feedback.
I have a friend who refused to play with a headphone mic (because they're expensive) And insisted on playing with an ancient table microphone and speakers. When I wasn't listening to his distorted heavy breathing, I could hear myself with a 1~2 second delay which was extremely confusing.
We don't play online anymore