This one was intended to be microwaved -- box pretty much explicitly said, "Don't cook this anywhere else." Note the Lean Cuisine. They tend to do frozen dinners ostensibly for people trying to diet. Someone else bought it for folks to try, and it had been in the freezer door for... a while. Months.
As for more generally, there was a period where a microwave has the only cooking method I had comfortable access to, and I still wanted to eat pizza occasionally (well, and not eat out, which is fuckoff overpriced). Since, well, it's quicker, easier, and generates less cookery to be cleaned than cooking in the oven. Do cook in the oven more often than not, (because yeah, it's better, and a bit easier to melt cheese and add ingredients and whatnot) but occasionally I get the hankering.
Totino's, by the way, is what I eventually settled on, which had bonus points for being just about the cheapest pizza on the market and the one that comes out least terrible when microwaved. Nuke for about six minutes, depending on oven strength. Comes out with a consistency roughly that of melted cheese (hence my offhand name for it is "melty pizza"), except maybe some crunchy-ish parts at the center. Very good for mixing with other things due to the texture (it's my primary other ingredient for mac&cheese&pizza, ferex), also pretty edible with some extra cheese and lemon pepper (and whatever else is on hand). It is pretty much the worst way to cook pizza, but it's the best option of the worst, that I've found. In that it's actually pretty edible instead of being... not.