Not very much these days.
I wouldn’t be able to enjoy my oatmeal as much, and I wouldn’t have nice melted cheese on my sandwich. Those are about the only 2 things I microwave.
Used to be that I cooked almost everything in the microwave. But I’ve learned to enjoy stovetop.
A while back my sister was dating a guy who “didn’t believe in” microwaves. I thought that was so weird. I always wanted to ask him why, but never got around to it.