Real easy answer: keeping a fridge cool during a very hot summer outside requires a more powerful cooling system. Instead most people have a powerful AC since you want the house cool anyway, with a cheaper fridge cooling system
The reverse is also true. You wouldnt want your fridge to require a heater installed in it to keep your food from freezing in esspecially cold winters
Adhd “hack”, sams club mattesses are relativly cheap and have a zipper to take the top layer off to wash. Saved my ass when I was cleaning my room after a deperssive episode and could make the bed feel like new again