John, you beat me to it. I heard the same thing a very long time ago the popping corn in a microwagve is extremely hard on it, particularly the magnetron. I have NEVER put popcorn in any of my microwaves. And it will not happen either, over my dead body. I even have some of those Rubbermaid microwave cookware that came out in the early 1980s. One of them has a microwave popper insert for the 3 qt. casserole. It's never been used. If I ever have someone in my life, he will either have his own microwave dedicated soley for popping corn, or will be done on top of the stove conventionally.
I still use mine some to cook. Thesee days it's mostly for cooking veggies, heating water for hot tea, defrosting meat or pultery, or cooking one of those pre-seasoned chicken breasts. I'll also use it to "brown" ground meat or sausage that I'm going to be putting in pasta sauice or soup. Much less hastle than trying to brown it on the stove, although occassionally I will use petek's method and boil the ground beef to cook it and get rid of the fat. when I had two, I used to use one to slow-cook roasts, have been known to bake a lasagna in it, slow simmer pasta sauce, make corn pudding (I cannot get it to turn it right in the regular oven, but I have a microwave recipe that works great. Will also use it to make pudding that's thickened with corn starch. No scorching on top of the stove. I've also made meatloaf in it several times. I also have a microwave recipe for sweet & sour pork that's a bit more healthy than the traditional version. My coworkers will practically throw me down on the ground when they hear I'm bringing that in because they want it and will get it over my dead body. They think it's the best. I have a full set library of microwave cookbooks and have used many of them over the years. I defijnitely don't like to use the stove top to try and heat waterr for brewing tea or making a cup of hot tea, it just takes too long and also puts out too much heat in the summertime. Also, I use it to thaw out and reheat individual portions I've frozen when I've made casseroles or anything else. I don't believe in simply trying to cook for one. I make regular size recipes and put the leftovers in individual servings and freeze. Before I had a mcrowave and was in college, I tried steaming to deforst and rehat leftovers. Was horrible compared to once I had a microwave. Another thing I make is a carrot ring vegetable side dish that "baked" in a small (8') bundt pan. One of my most requested side dishes as well as a succhini/squash casserole that has eggs in it.