I have always talked to my pets, just like I would another human being. It may be just a "Hello there, Kitty" as the cat enters the room, or "Good Boy" to praise the dog when she has done something good.
We all have pets for love and companionship, and there is nothing wrong with talking to your pets.
Personally, I think that they understand far more than we know. My little dog, Jasmine understood most of the things I said. I would say, "Where's your leash?", and she would run to the coat rack where it was hanging and do a happy dance.
Animals need communication from their owners to create a lifelong bond of love and friendship!