Did you notice that the most flourishing area of gaming on GNU/Linux are deathmatch, arena style first person shooters (FPS)? We have Nexuiz, AlienArena, OpenArena, Tremulous, Quake 3 etc. and it's all about running around shooting (or fragging) as many bots as possible with extra juicy blood and meat butchering effects.
I have a weakness and it is an inability to settle on one thing, its pros and cons and be still. Cons always get me looking for something new and different. If there is even a slight irritation or an envisioned possibility of something significantly better I have a desire to pursue that even if I'm not sure I'd be able or motivated enough to go all the way.