I think a lot of people on GAF browse more than they actually play games mostly because jumping on the internet and surfing GAF is not only fun, but also much more accessible. It takes a few seconds. Loading up a game takes minutes and actually playing the game requires more mental effort.
I've been through two slumps. The first didn't occur until 2005, so I had been gaming for ages. I had just finished Metroid Prime 2 Echoes and loved it, but I had gone through some big changes in my life and had other priorities. I ended up not playing a single game until about nine months later. Which game did I play? Resident Evil 4. Yeah, that brought back my love for games. And then some.
The second slump was in 2008. I had finished school and was working in my year off, and there were about 40 hour weeks, whilst playing football as well. I was rooted every time I got back home. I only had energy for watching television, the mere thought of going through a game almost scared me. I'd say this slump lasted about six months or so. I wanted to play games but simply did not have the energy or time to.