Anybody who thinks any pet is going to be completely obedient to them is either incredibly stupid, or delusional. Or maybe both. Animals are individuals, with their own distinct personalities. Sometimes they’re perfectly happy to do whatever you’d like, other times they’re going to do what they want, and you don’t like it, tough. (Anyone who thinks an animal isn’t capable of expressing “Fuck you and the horse you rode in on, I’m doing what I want” has obviously never had a strong-willed pet.)
I have pets for a lot of reasons. They’re soft, and their fur feels nice. I like things that are soft and feel nice. They’re cuddly and warm, and I like things that are cuddly and warm. They make nice noises, especially when they’re happy, and puppy and kitty kisses tickle. The rhythmic rumble of a purring cat on the pillow helps me fall asleep, and warm lump of cat at the foot of the bed keeps my toes warm. They’re a lot more entertaining than anything on television, and they’re cheaper than going to the movies or concerts all the time.
Mostly, though, I keep them around because the house just doesn’t feel right without them. I can’t explain it, really, any more than someone could explain any other inborn urge. Some people have a deepseated need to be around kids, or to make music, or to make order out of disorder. Others of us have a deepseated need to be around animals. We can’t quantify or rationalize it, it’s just there.