So you want to have to press a button 20 times to put your microwave on for 10 minutes? What do you have against keypads?

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.

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

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

I'm like the OC, I have no need for a microwave for 20min, just 3min max at the time. I don't need programs and what not.

An office I worked in had a microwave that had only a single dial. The dial had time increments on a pseudo-logarithmic scale from 10 seconds up to tens of minutes. Turn clockwise to turn on, turn counterclockwise to turn off/clear. It was nice because you could also decrease the time mid-cook if you decided that you didn't want to as long and were fine eating a slightly colder lunch.

Then why not buy the cheap one I have and glue a piece of plastic over the other buttons?

I'll even make a nice looking piece of plastic for you.