>>11918172 (OP)
I didn't bother with Steam and HL2 at all until I lost my original HL1 disc (I let a friend borrow it and it sadly never returned), but I still had the case and CD key and realized I could activate it on Steam to download it there. Even then, it took me like four years to actually buy anything on Steam until the first major sale happened.
I didn't (And still don't really) like external launchers for my games, even things like Gamespy and Xfire was too much for me back then. If it wasn't included in the game itself, I wasn't going to bother. Even today, although I use Steam for several games, for managing friends lists and chat, and for the remote play feature that lets me remote to home and play games better than what a VNC setup does, I still appreciate very lightweight games that don't have to connect to anything to play and have very low processor/RAM requirements. Almost 90% of my time playing games is on things that fit that definition.
One of the things that made me drop Blizzard's games was the battle.net launcher, after I stopped playing WoW I played Starcraft II so infrequently that I got tired of trying to log back in each time and uninstalled it, despite liking the game a lot. Never went back to buy Diablo 3 or anything else simply because the launcher got in the way. I probably wouldn't continue to bother with Steam either if it wasn't for all the non-game features the program has.