I stopped playing PC games a while ago (play a few from the Windows Store still). I use my PC from my bed, while connected to my TV, so it's a less-than-ideal gaming setup, to say the least. I played WoW on a laptop before I built my desktop, and I can say with great certainty that it's not a great experience. I played that, Plants Vs. Zombies, Counter-Strike: Global Offensive, Team Fortress 2, and a little bit of Urban Terror (a standalone game that was originally a Quake III: Team Arena mod that I played as a kid). Once I did a clean install of Windows 8, it just wasn't worth the time to reinstall Steam and my games over 3Mbps DSL, considering the 150GB data cap AT&T puts on its DSL, along with the fact that I simply wasn't playing games much. However, we just got Comcast (25 Mbps with a 250GB cap) a bit over a week ago, so I might reinstall them now that it won't take a week to do.
Laptops just don't do it for me, though. The one I had ran REALLY hot, and they're too cramped for my liking. I hate trackpads as well. I think I'd be more likely to get a hybrid device, if I even get another mobile computer.