You can never have too much money, too much real estate, too much ammo... or too many guitars. That said, animal hoarders creep me out. I think George Carlin said, "A house is just a box for your stuff." The box limits the stuff. We all have more than one (and some are building another). As long as you get different sounds out of each one and can use them, why not? As long you don't neglect your kids/wife/dog, have fun.