Where I live it falls typically between 40 and 60 degrees at night.
I turned the heater on at night to a massive 75 degrees when it was 62 in the house, and my roommate through a fit.
After the argument, I got to thinking, is 75 degrees all that unreasonable? We both work nights. He isn't ******** about the temperature, but rather the bill following the use of the heater.