That's because dogs make the best friends, offer the most comfort and of all creatures ask for the least in return. Of that I'm certain. Think about it. There is much in a dog's guileless existence that we could learn from. I made a short list.
Dogs enjoy the simple life.
Dogs eat, sleep, eat some more. They bark at perceived danger or just for the fun of it. They salute a full moon. They never balance a checkbook, expect a raise, plan a seating arrangement for a dinner party. Dogs obey nature.