I never talk to myself. Out loud - nearly never. Maybe rarely when I'm looking for something, like where is [...], and someone* is there who could actually respond to my question - otherwise never.

*someone other than myself

Of course I occasionally talk to my cat, cat recognizes tone of voice and is able to 'respond' with vocalization which is pretty amazing and amusing. Unfortunately cat can't advice on seemingly lost things I'm looking for. This cannot corroborate my cat-person theory, looks like I have a problem.