Not everyone does, I’ve had a lot of conversations with a lot of people on this topic.

People’s thought processes range from monologue to dialog to narration to silence to images to raw concepts without form.

I personally do not have a constantly running monologue, but rather have relatively short bursts of thought interspersed with long periods of silence.

It’s so you can pick nice clothes to wear in the morning. Imagine how horrible your outfits would be without it.