I loved dogs when I was growing up but have not had the opportunity to own one since. Being a single working person does not lend itself to responsible dog ownership.
I gradually became more interested in cats, and currently have four. They are surprisingly doglike in many ways that non-cat owners will never quite get until they spend some time with a cat. And they really need to.
One of my cats, a male siamese, is a far better retriever than any of my three dogs ever was. They are terrific pets.
Still dogs can actually get out there with you and be your co-pilot in the Camry or be your running partner.
I think people will always need these two species in order to be the best humans we can be.