While I am sure the community enriches gaming, I think their most important contribution is "AI". Chatting has nothing to do with that though.
I suppose its different strokes for different folks. I'm more into the human element when playing online, meaning interaction. When I tried Warhawk I found it fun for a while but it got boring very quickly because of the total silence while playing. The opponents didn't seem human to me after a while, and eventually playing online seemed pointless. Your mileage may vary though.