Accountability. It sounds like a bad thing, but it really isn’t. See, accountability is what keeps you going when the workdays drag on and you feel like you have no words left. It’s the pressure that gets you to squeeze something out when all you want is to turn on the television. It’s the guilt that pushes you to finish ahead of the deadline. It’s good stuff.
I could of course talk about the other stuff that writing groups give you—the importance of support and input, of community and editing—but I’m not going to. See, I know, deep down, that though the other stuff is what got me to join a writing group, it’s the accountability that keeps me producing.