It's obvious why they stopped it eventually (pldecal.wad pretty much became obligatory porn sprays everywhere), but those were the days.
Dusty Dunes in Holland FTW :)
In retrospect it's hard to see how the game wasn't more plagued by cheats than it already was, but again it comes back to learning which servers were good servers and had active moderators who could ban people who were obviously cheating, and the less obvious probably just got away with it but were by definition less disruptive.
Of course, that also led to third party tools like PunkBuster in the end whose function then was later centralised with VAC.
GoldSrc games/mods were the golden age, and I will die on this hill. I preferred Natural Selection over CS, and it was just as moddable. It was the best. I was suited up in Mjolnir armor, wielding the pulse rifle from Aliens, blasting the soldier bugs from Starship Troopers.