No, my normal character is just a lot stronger, and can do many more things, such as move through dungeons with ease. Werewolves and VLs were just put in to have a fun time when doing quests and adventuring got boring. Their usefulness is negligible compared to the normal character. Werewolves don't even have anything that affects normal form. At least vampires have the sneak, frost, and illusion bonuses. Though, werewolves also don't have drawbacks, but that doesn't make up for anything.
100 percent immune to disease. And at a certain level, of course your character will be more useful with shouts n' [censored], but the VL and WW are very powerful as well, doing things your normal character never could. It adds a very powerful side option to u whenever u want. Example. I get ganged by a bunch of forsworn. I can either kill em normally with sword and shield, which takes a while on master, or go werewolf, and wipe em out in 1/4th the time.