Do you talk to your baby often?

Hi everyone! I know they say talking aloud is good for both mommies and babies, however I find it dificult to do so without feeling silly. I've been practicing by reading baby books aloud to my boy, and when he kicks hard I'll rub my stomach and speak to him a little... but for the most part I don't really know what to say. I've always been a person to keep to myself and enjoy the silence. I was curious to know how common it is to talk to baby, and I'd love some suggestion on ways to become more comfortable talking aloud to him. What should I talk about?