I talk to my cat all the time. My dad thinks it's stupid because he thinks she can't understand me. But she has given me indications that she can. She always responds when I say her name, no matter what tone of voice I use. I have tried to teach her other words, like "food", but she doesn't get it. Can't teach an old cat new tricks, I suppose. (and she is old - about 14 years old I believe).
I also talk to objects. I'll yell "Come on!!" at my computer when it doesn't behave the way I want it to. When I'm gathering materials for sewing, I will talk to the characters I'm trying to make, saying things like, "Okay, <character name>, you need <this color> fabric."
Today when I was posing my Nendoroid figures, I was saying things like, "Okay, <character name>, you need <this part>." (For those who don't know, the parts on Nendoroid figures are interchangeable).
When I talk to these inanimate objects, I realize that they can't talk back and don't have feelings, no matter how much I wish they could and did. It's mostly a way for me to get my thoughts in order and focus. I monologue to myself for the same reason.