I remember playing one of the early CS betas as a Half-life mod in ~1999. It was such a huge leap in gameplay and style from anything else out there. Most FPSs up to this point were SciFi based, guns like the BFG and plasma guns. Counterstrike's focus on realism really altered how you connected with the game. Columbine had happened very recently and was still very much in the zeitgeist. There was a very real cultural…
I didn't like playing with people who were too much focused on killing+owning/taunting other players though, it was (and still is) my limit.