I guess people who only microwave frozen meals don't need a dishwasher.
What do they do when the microwave dies?
We had a microwave over the stove when we moved in. A few years later we got rid of it and put in a proper vent hood. My husband built a shelf for a smaller microwave above the base cabinet next to the stove. When his shoulder crapped out and he didn't want to reach up to grab hot stuff out of the microwave, we moved the microwave down to the countertop.
We run the dishwasher every day. Only sharp knives and nonstick pans are washed by hand.