Uhh...you did play the blood moon expansion right? cuz they did treat you as an outcast if they knew you were a werewolf they'd attack you on sight and some people did run in terror and some attacked.
I did. Must admit I don't remember it much and it was years ago. But it seems all too easy to find/become one. I think it should be such a rarity that you could spend hundreds of hours playing without every coming across them. (unless you search them specifically on forums etc.)
But I'm referring to being an utter outcast with hunting parties going after them if they're seen. There should only be a select few in the whole of Skyrim (say 1 for every 1,000 NPCs). Same with vampires.