Gas heating is OK UNTIL there is a power outage like we had in our counties from the last winter storm on 1/10 - snow in Atlanta...The gas heat has electrical ignition so no electric - no heat. We were without power for 15 hours and others in nearby neighborhoods were without power for 19 hours. Why? Trees were down taking power lines down and in some areas from ice but also unknown reasons...How did we stay warm? We stayed in bed and piled on more blankets. Burners on the kitchen stove could be lit with a match but I was hesitant to try it in the oven for heat so didn’t chance it. Could heat soup etc. on burners.
I had a gas furnace for central heat in Washington state. The furnace had a pilot light inside. It was not electronic ignition as far as I know. Once in a while the pilot light would go out and the heat would not come back on as directed by thermostat. In that situation, I would open the access door to pilot light and light it with a match. I never had a electronic ignition furnace, but I have to believer if gas supply is on, you should be able to light the flame with a matchstick.
You can always add one or more of these to your house for blackouts.