The truth of the matter is that any country would be in a more secure position relying on resources that are regenerable, can be produced locally, and whose network can cope with a higher measure of decentralization. They make both the grid/network and the country itself more resilient regardless of "policy".
As I said, you can't make your own gas and an outage for the wholly centralized gas distribution system can have dire consequences that would be lessened or even eliminated for setups like rooftop solar and heat-pump.
Our induction cooktop fried its driver circuitry last year and we were stuck cooking off a camp stove for weeks while waiting for a part from Germany. Old school cooking methods are less high tech and more repairable.
Compressor stations break down, suppliers fail to deliver gas, mercaptan might not be available, control systems are subject to cyber attack. My point is simply that any energy delivery system has weaknesses.
In a home the two systems generally serve different purposes so I am not sure the value of having both is as high as you suggest. My gas furnace/hot water heater won’t turn on, for good reason, without electricity. The only thing that works when the power is out is my stove top (not the oven) if I manually ignite it. They would work if I used a generator but that is third supply and it shouldn’t be lost that the output of the generator is electricity. That generator could itself be powered by natural gas but that is not common.