A Personal Memory....
Wealthy friends of my parents were the proud possessors of an Amana RR-1. Larry (a physician) was the kind of guy who wanted every new toy on the market; only the newest and best of everything was good enough for him.
At any rate, the RR-1 was touted as a cooking appliance, with lots of applications for family meals. Since the family totaled seven, with two adults and five children, Larry obviously wanted to help ease the chore of feeding such a large brood.
Well, for such early adopters, the family sure went into the 21st Century in a hurry. The expensive miracle appliance quickly found its niche reheating leftovers and making snacks. Larry used to refer to it as "the $400 hot dog warmer" (knowing him, he knew someone who knew someone and got a deal off the $495 list price). So far as anyone knows, Mary never actually cooked in it.
It's amazing how consumers determine what appliances will become, no matter the intentions of their inventors. I doubt one microwave in ten thousand is used for any real cooking today, or even defosting - just popcorn, ready meals and reheating.
The only difference between that 1967 purchase of an RR-1 and today's machines is that the "$400 hot dog warmer" has become the "$59 hot dog warmer."