The dryer thing amuses me as well. As others have said, it seems to be a product of frugality more than anything. The mindset is that it's expensive; therefore, it's wasteful. I have a mate who has one, and one day he was talking about how he just 'sometimes' uses it almost apologetically. I've had the all in one washer-dryer combo things, and I never used the dryer function because the clothes came out too wrinkled and crunchy. Drying racks worked fine for me. But....lol....I just acquired my first tumble drying with a condenser last November, and I'm in heaven with fluffy towels again. I no longer have my sitting room occupied by a huge drying rack either and clothes hanging off all the radiators and door handles.
I find the people here also get really worked up about flat roofs, open floor plans and excessive amount of windows for the same reason. It comes down the energy costs. It's really summed up well in that recent NatWest advert about the dad running around the house turning switches down or off with the 'I work to pay my bills'. It's just a cultural thing. I place no value judgement on it.