1) agree, probably between awful and tolerable 2) yep, but in most home it isn't available(maybe in most homes in all remembered areas, excluding countryside) 3) yes(but one another time i have pyroelectric autocleaning oven and accidentally burnt accesories in it) 4) partly agree, but partly have ideas like ihm and franciscop https://news.ycombinator.com/item?id=17439057

sorry for slow answer