This is might be true but theirs still oppertunity there if you can actually get a player to conect to a drow form a bond it makes that betrayal actually meaningful. It is s mostly the players fault if they just go around and kill anything that isnt a good race not all evil races are blood thirsty mindless killers. You can out wit them and use them and even redeem them you have a voice and roplay can be a decent weapon in it self.