As for addictions:
My Father gave me Panzer General II 2 weeks ago....It was so bad that I dug out my old Atari 800 manuals and games and used an Atari emulator to play the old Sid Meier wargames from 1985: Cursade in Europe and Conflict in Vietnam. Unfortunately, Decision in the Desert, the best one, doesn't work. I'd love to get these games for the PC but I can't find them anywhere. I even called Microprose 3 years ago asking for them and they said they could not help me.
I have only played through WC 4 once, and am going back through the variants now. Privateer is next.
I may never tire of Secret Ops Krieger missions, especially 1, 2 and 5!