If we are talking about just residential climate control, yes. If you include water heating with that even more yes. People don't think about the energy intensity of heating much since most people heat by burning things (natural gas, propane, coal or wood), as opposed to using electricity. Electricity is more efficient but not always as cheap as burning things.
With a heatpump it can be as cheap.
So, no. “Most” energy is not used for heat. I imagine the biggest single draw is transportation.
If you are expanding this to include more than just residential, then still most energy is used for heat. Almost all industrial uses are heat based. Locomotion is number two.