Is it normal for me to feel this way?

My boyfriend of 3 years has two cats that are very hard to live with. They scratch him, myself, my son and on several occasions have attacked my dog who is a third of their size and always tries to run away from them. They have destroyed all of my boyfriends furniture and several of his electronic devices. We can never have a Christmas tree or any other plants or pretty vases. He says declawing them is cruel even though the vet he uses disagrees. He keeps saying they are just kittens and will grow out of it. But I don't see this happening anytime soon. He wants to move in together but I think this would cause alot of problems in our relationship. It wouldn't be fair to ask him to give them up. I am hoping someone else that has experienced this may have some suggestions. I love my boyfriend but as it stands right now I can't see living with him with his two fur babies running amuck.