Voice Recognition Software

Why does s*** have to be censored? Everyone s****! I can say damn it, I can say God damn it, I guess I can't say f*** it.. but I don't understand what's so bad about s***! I can say poop. I can say defecation. I can say crap. I can say dung, I can say ass, I can say sphincter, I can say penis, I can save vagina, why can't I say s***??