and exactly how many people go on these custom servers?
HL mods (of both HL1 and HL2) are usually advertised on big mapping sites and custom maps sites. People i know can name 3 custom mods right off their head...
Also, mods offer a much more varied and extensive play, with a storyline (which all CS maps do not have) its always 'rescue the hostages' and 'disarm the bomb' people are far more entertained with mods. CS maps are all the same in objectives. One does get bored of them eventually while a mod continues to engulf the player in a storyline and consistant yet varying action.
And CS maps dont just plop on people laps either
EDIT: Wait the conversation has ended!? And i was enjoying a good argument