Just about all fat gets digested and converted into sugar

This is not how lipids are metabolized. They are not converted to glucose right off the bat. Fats are broken down to monoglycerides to be absorbed, recombined to triglycerides and eventually chylomicrons, and transported to adipose tissue.

https://en.wikipedia.org/wiki/Lipid_metabolism

What’s the point of a garbage disposal if you can’t put food in there? You don’t need that to make liquids go down the drain.

intrinsic vs extrinsic motivation.

You never do things for yourself? No hobbies or anything that are basically “pointless” aside from your own personal satisfaction? Never done something to challenge or better yourself with no reward from someone or something else?