It’s interesting. I don’t care about the number on the ‘dial’; I care that we are comfortable.
Some days, 68 is fine; other days 70 works. Wife likes it warmer than that usually.
In our case the thermostat is in the center of the house. That happens to be a hallway. Would move it, but no other location works really. In any event, it does not quite represent the temps “where we live”.