I could never go back to a non-sensor microwave. I have no idea how long time anything should take to reheat in minutes and if I had to do it manually I'd be bound to mess it up. Requiring the user to know how long time some random food should take to reheat is BAD ui.

I just press start on our microwave and it heats it up to an edible temperature. Press the up or down arrows to change the goal temperature. There's another button for defrost that goes slower.

It's 15 years old so not exactly high technology.