We omitted the microwave and got the larger fridge, and we're very happy we did. Like Richard, we don't microwave much at home either, and we don't miss it.
Richard, you can still get the larger fridge and the microwave if you feel you really need it. The microwave is installed under the kitchen counter however, so you do lose some cabinet space.
"You can't buy happiness, but you can buy an RV. And that is pretty close."