I’ve never really needed the other buttons. It has a whole ass numpad and loads of menus, when all I need is a dial for time and maybe one for power.
The reason there’s tons of buttons and settings is because it looks better on the showroom floor, especially when sitting next to other microwaves. Same goes for just about every appliance: They’re not made to work particularly well or last long, just look better than the other guy in a big-box store.
The fact that I can’t test drive an appliance before buying it is very frustrating.