i dont like single player games. too lonely. i like interacting with real minds, where you cant predict what they do every time.
And who said i havnt played Half Life?
i'll be getting HL 2. and i'll play it online and have a whole lot more fun then single player
(also. a Single player FPS on PC poses NO challenge what so ever. they always move and act like bots. bots are too easy to beat.)