I'm a Gen-X gamer, which means I am likely older than you. I've been gaming I was 4 years old and received my first console, an Atari 2600, and I grew up during the Golden Age of Arcades. I didn't "get into gaming" so much as I was raised with it, and never grew out of it.
In addition to this cblog I also publish frequently over on Bitmob, am a writer for Gamer Limit, and the Editor-in-Chief of the English gaming website Game Kudos (http://gamekudos.com/). I also just wrote my first piece for The Escapist.
I prefer FPS titles over anything else. There's something immensely satisfying about throwing thousands of rounds at the enemy and feeling my living room shake. Anything sci-fi is likely to attract my attention, and I have a soft spot for RPGs and RTS titles due to my roots in tabletop gaming. I approach games the same way I approach music: I tend to have very small libraries of titles which I don't just play, but digest. Depth and longevity are my parameters for ownership - but I'll try just about anything if you hand it to me as breadth of experience is important to me, as well.