This reminds me of what Don Norman quotes in "living with complexity" around how people buy the microwaves with all the buttons even though it's harder to use.
The two-dial ones of old were the best. Set power dial (or don't touch it if it's already where you want it), turn timer dial. Microwave goes until timer dial hits zero. No "start" button, no cancel, no menus, no preset crap. Just two dials.