What is good about having a pet?

The best part of having a dog is there undying love. Should a person be a total jerk, alienate everyone in their life, and not contribute anything to society, their dog greets them with total affection. Cats are just the opposite, making no effort to please. They domesticate and make servants of us. For some reason,, we find their sociopathy intoxicating. These pets appeal to the bipolar component of our nature.