Dogs don't get cranky when they are lost. Dogs understand that instincts are better than asking for directions. Dogs like beer. No dog ever bought a Kenny G or Hootie and the Blowfish album. Dogs never criticize.
Dogs enjoy heavy petting in public.
Dogs seldom outlive you. Dogs don't care about football. Dogs can't bounce a check. You never have to wait for a dog. Their ready to go 24 hours a day.