If you want to play with vampires, you should probably get it. Otherwise not. I got it because I love playing with vampires. In my other (human) saves I've handled the vampire problem by deleting the known vampires, when I started the game. I also always save in the evening, when my sims go to bed, so I can quit without saving if a vampire breaks in. It has happened to me three times during the about four simweeks I've played that game. In those cases I check the name of the vampire, then quit, then go back to the game and delete that vampire from manage households before I continue playing. The last time I had to do it, I actually deleted all the homeless elders there, just in case, because for some reason the vampires the game spawns are always elders.
