It's why I prefer going into smaller streamers rooms, the chat usually talks about the game, you can have a good chat with them, the streamer usually interacts with you etc. I watch a guy stream Assassins Creed on the PS4 using the built in Twitch app and much prefer the atmosphere of channels like that.
Personally, I have little to no interest in the chat beyond possibly asking the streamer a question. Same as how I feel about commenting on YouTube videos, I just have no interest.
What I like about it is getting game content being played by personalities that entertain me. Its a way to see so much gameplay that I would otherwise never see. I treat it like a TV show. The whole 'social' side of it just doesn't appeal to me.
Expanding twitch to more people is great since it could lead to more entertaining people doing gameplay videos, but it will also mean there will be more crap to wade through. I don't know if I will stream stuff myself (I have yet to do it on my ps4), but I will watch those that appeal to my tastes.