I doubt that gamers who don't play out the romances are going to miss a significant part of the game. In BG2, Mass Effect, Kotor, Kotor 2 and even Torment, the romances made up a pretty small part of the overall gaming experience. They were all still good games.
Anyway, I know the OP had issues with being forced to play a male protagonist that went beyond the scope of romances alone, and like others have pointed out, the best way to protest is to not buy the game.