If you leave hot food sitting in any microwave long after it finishes it will get steamy then condense. That isn't good for it (I have a second one from my dad's house that apparently he did this with--there are rusty spots in the inside). If I get a new microwave it will be to replace both of these, which still work fine and will go on to new owners, or perhaps with my children when they go to college.

SRS