I don't think it's anything to do with food snobbery.

I think it's just choice. We'venever had one because we've never had the need for one. Not sure what to make of people that can't manage to cook/eat without one.
On a side note. And I fully appreciate that this is a rare and unique story. But it's interesting all the same.
My friend about a year ago used to get really bad headaches throughout the day. She started dropping things, lose co-ordination. Very very strange. Her GP had no idea, sent her to the neurologist, all the tests, second opinions, nothing. Even checked for a tumor, she appeared fine. One neurologist in London referred her to yet another chap who specialised in odd things (!) and he had been conducting some sort of study on the effect that microwaves have on food and how this can react with a small percent of the population. His first and immediate diagnoses was get rid of her microwave. We all thought...

Sure enough and weirdly all her problems stopped. Although this obviously gave her additional issues like eating out etc. She has been fine since EXCEPT on one occasion a couple of months ago when she got the same headaches back after staying in a hotel in London for work. She told them she could not have microwaved food and they were fine with it. Her meal was not microwaved. She went back and saw this Doc. (he was keeping a check on her anyway as part of his study) and he said go back to the hotel and question the manager or whoever is in charge of the kitchen because as far as he was concerned there was no doubt she ate food from a microwave. This she did and the hotel manager discovered that her starter was soup and "all" their soup is heated is microwaves. Lots of apologies... blah blah blah... but she is now fine. So...