Read the article a few days ago and it gave me a lot of insight into how gaming can be a helpful tool for people. I can't imagine being in constant pain all the time though. As it is, I'll occasionally get bad headaches or tooth pain, and the last thing I want to do is play games when I'm experiencing pain--I just want to curl up and sleep. I figure being able to focus on anything at all while in pain is a good first step.
To answer Neal's question, back when I was a sadder individual I tended to use gaming as a way to escape being unhappy, although I've come to realize that that is not necessarily a good thing if relied upon. Still, it gave me a temporary break from reality when I needed it most. Now, I'd say gaming helps me in that it acts as a tool to facilitate relaxation at the end of the day. My fiance and I also play games together (or one of us watches the other) so it works for us partially as an entertainment/bonding tool.