I really don't care how many pets people have as long as they take care of them and keep a clean house.
I think that's the key. There was a fellow who was one of my best friends when we were young and single. We worked together, went bowling and fishing together, etc. And of course later when I moved on to another job, and both of us married, we still visited frequently and our wives became friends. But we eventually quit visiting them at all because we couldn't stand the odor in their house. I think it was 5 dogs and 4 cats and I guess they had become accustomed to the odor, but it was horrible.