[crazygringo]

From my observation, people tend to use microwaves 2 different ways.

Either they're for quickly reheating small amounts of leftovers or maybe boiling a cup of water for tea, and you have no idea for how long, in which +30 is all you need. You never do more than 2 minutes at a time. You'd never put something in for 10 minutes.

The other way is the microwave as a kitchen tool, where you do things like put in a large frozen family-size something (soup, veggies, etc.) and reheat it on 20% power for 20 minutes.

The 2-button microwave is awesome for the former group. It's useless for the latter group.

[joedevon]

I often have used the microwave as a timer/alarm before switching that function to my phone.

[emodendroket]

Since the 30 second button is there anyways I can't really see why both groups wouldn't be satisfied with the current arrangement.