I had mine on for an hour yesterday to "test it out", as we'd just moved in the summer, not used it yet and had the boiler serviced. Even that made me feel a bit guilty, but it felt good as yesterday was a chilly one! I've never really felt that guilty about having the heating on, at least not before this year's price shit show.
I know hardcore MN will be holding out until November...
YABU No, I've not switched my heating on
YANBU Yep, I've embraced the toasty money pit!