Soldato
I didn't read the preceding points, but this is my in-laws to a tee. They're a 2 person household, we're a 3 person household. Our bill is a third/quarter of theirs. Exact same provider. Their heating is on practically 24/7 in the winter, even on warmer days. Kettle gets filled to the brim when making a cup of tea instead of just using enough water. Hour long showers (ok, not an hour, but loooong showers). Heated towel rails gets left on 24/7/365, all electronics on. Just absolutely nonstop wasting of electricity with the surprised Pikachu faces when the bill is due.
Can't tell them any different, this is the way they've always lived. They're not interested in changing a thing.
lots of people like this because they have not needed to care before, many still wont