Yogi: Once the mind settles down, there is nothing to do. So, the mind goes into thinking.

Sayadaw: When you have nothing to do, when you’re bored, you start to think because you entertain yourself by thinking, by enjoying your imagination.

It is a strong habit. That’s why the mind wants to think.

A lot of meditators’ entertainment is from thinking because they cannot use the physical sense doors to enjoy themselves. They can only enjoy by imagining – nobody knows and nobody disturbs them.