I have 3 cats, and love them to death. I plan on getting a dog as well when I get a house. I say, so long as you don't have an allergy to pets, then go for it. The only problem I have with my cats, is that one of them likes to sleep on my pillow with me, and I'm always waking up to cat in my face. If anything, you could have a room that is pet free - i.e. you don't allow your cat in there.