In most urban fantasy I've read, vampires are frozen, elegant relics clinging to the past. Wolf shifters, though? They're all about raw, messy present-tense life. A vampire romance hinges on that ancient, tortured soul trying to remember warmth; a werewolf plot is about fighting the beast inside you while trying to build a pack and protect your territory tomorrow. The vamp is a tragedy, the wolf is a struggle. Think of it like this: a vampire's central conflict is often about losing humanity, while a werewolf's is about integrating the monster into a functioning human life, which feels way more immediate and relatable.
That pack dynamic is the real clincher for me. Vampires have covens, sure, but they're often depicted as political nests of backstabbing and hierarchy. A werewolf pack, even a dysfunctional one, is built on a biological imperative of loyalty and protection. The found family aspect writes itself. You get banter, rivalry, deep bonds, and a built-in support system (or source of delicious internal conflict). It's less 'I must seduce you for eternity' and more 'the moon is coming, get in the car, we need to guard the perimeter and then you can argue about the grocery bill.' That chaotic, lived-in warmth is a huge strength.
I also think the physicality reads better on the page. Vampire speed and strength are kind of abstract—poof, you're across the room. Werewolf transformations are visceral: the crunch of bones, the scent of pine and blood, the heat of a huge body. It's a more graphic, grounded kind of power that feeds into action scenes and, let's be honest, the romance tropes in a very satisfying way.