I like FPS's, sports, racing and flight sims, and others types. I'm not a hardcore gamer by any means, especially compared to the many on these boards, though. I just don't have the time or desire to play every game that comes out. I liked the look of HL, but I didn't have a machine that could run HL when it came out. For some reason once I got to a point when I could afford a new machine I just never got around to picking the game up.
My work and other activities eat up my time too. I've got a big stack of games waiting to be played, and the list of grade A games that I haven't bought would probably floor you (original Quake, Max Payne(s), Serious Sam(s) to name a few).