I have come to the same conclusion. Breakfast is the most important meal of the day ... to skip! A longer fasting period has a lot of good effects, including being strongly protective against diabetes.

Your cells accumulate a lot of junk, and that junk presents as hazard, and it only gets cleaned up (autophagy) when your body needs it for fuel. After you have burned your blood glucose, liver glycogen (muscle glycogen cannot re-enter the bloodstream), oxaloacetate, now you have to ramp up gluconeogenesis from some other substrate, and this forces your body to scavenge. You clean up this junk generally before muscle wasting occurs. And the stages are not strongly delineated, they overlap.