Since we moved into this house, I have wanted to get a new thermostat because it is not programmable. It is just one of the many things that make this house that is at least a decade newer seem actually older than our 1995 house we built in Tucson. I even found the one I wanted to get a few months ago, but we just have not gotten around to buying it. This morning waking up to my bedroom being 60 degrees and finding that the thermostat reset to a setting of 64 (yeah, my room runs 3 to 4 degrees less than the thermostat even in summer) is a real reason we need to get a new thermostat.
Perhaps, it just needs a new backup battery, as the power was only out for an hour and I know our one in Tucson did not lose its setting for power outages that fast. However, instead of changing it, it is finally time to have one that can be programmed to different settings for time of day and is more energy efficient. Also, the one I picked out can be controlled from our phones, so from my room I can override when Mom and Dad sets it down ridiculously low in the summer (we all seem to not need to touch it since we went to heat mode and picked the 70 setting, although yesterday we found Mik's room to be extra toasty, but he likes that).