For me, I stay for the people. I enjoy playing the game because of the people I play it with. It makes all the difference for me. Would I like to see new additions to the game? Of course! I patiently wait for new content and sometimes impatiently wait, just like everyone else.
When it comes down to it though, new content is great until you get bored with it because you have nobody to share it with. But that is just my opinion of course.
