I don't know about in the US, but in the UK there have been enough media scare stories of dryers catching fire as well as a popular brand which failed to recall

I don't know about in the US, but in the UK there have been enough media scare stories of dryers catching fire as well as a popular brand which failed to recall 1 million faulty dryers (https://www.thefpa.co.uk/news/update-on-fire-risk-dryer-recall https://www.thefpa.co.uk/news/update-on-fire-risk-dryer-reca...) that it's put a lot of people I know off. The risk is small, of course, but I do know people who won't leave things like dishwashers or washing machines on at night although I do because I'm lazy ;-)