No "I honestly have no interest in either" option?
(Vampires, at least, have been a basic feature in the last couple games - werewhatevers only showed up in a side expansion to MW and not at all in OB. On the other hand, between silly post-Buffy TV dramas, Anita Blake and other novels, Underworld, and the Twilight crap, vamps & weres are terribly overexposed and cliche. I'll be glad when that whole fandom dies down a bit.....)
Actually, lycanthropy has been in the series since Daggerfall. In fact there was a number of quests related to it in Daggerfall. You received various bonuses to skills and stats (some bonuses which were shared between human and Were form if I recall as well as immunities to anything less than silver weapons) while also having to feed every 15 days (else suffer heath penalties). Your Werewolf form was considered another character from your human form, so murders comitted by you while in Were form didn't go on your human forms criminal record (and vice versa). You could cure it with a cure disease spell (with 72 hours of contracting it I believe it was) however if you went past that 72 hours you would become a full lycanthrope and the only cure was from performing a quest. There also was a quest where if you completed it Hircune would give you "Hircune's Ring" which would no longer require you to feed every 15 days, you could change between humand and were forms at will (instead of twice per day) and no longer were forced to transform on full moons.
Really there was a lot that Lycanathropy added to the game. I'd love for it to return. Especially Wereboars! Screw Werewolves, Wereboars are where it's at!\
To those saying that Wereboars are mega super rare outside of Highrock? You need to remember that Highrock and Skyrim share a border. Additionally, in Daggerfall you also encountered Wereboars in Hammerfell which also happens to share a border with Skyrim. I'd say that it'd make plenty of sense that Wereboars could be found in Skyrim in at least decent numbers.
All of the lore I can find agrees with you that those beasts are extremely rare...In fact...There was only one mentioned in 'Daggerfall'...I wouldn't mind a wereboar in the game if this were the case...
Actually, at higher levels as I recall Wereboars became more common to encounter than Werewolves.