Of course it is not silly to worry about cats or even dogs, rodents, snakes...any nonhuman companion in the house. I have four cats and one dog. Three cats from the humane society and the dog from the humane society. They were having a two for one sale on cats at the humane society, so I couldn't resist. They give unconditional love and it doesn't bother them if you are eccentric, an aspie, etc. When I am sick, 3 of the cats and the dog will lay all about me caring until I get well. They know when I am sad or lonely and come by me then, too. When I come back from a trip, they all get clingy and follow me all around. When I was very ill and had to go to the hospital, my dog stood over me and awake until I had to go. It is very heartening to see all the people with cats, dogs, pets of all kinds. It shows me the compassionate side to you all....