Kind of like how the UK peaked around the turn of the century and has been a net importer for more than a decade, but delayed by maybe 15 years.
In this line of business (IT) its all about scaling. The economic models around natgas are hilarious in that nobody scales beyond one, at least in public. So every country on the planet has a natgas economic model where on a scale factor of one, the permanent transition from exporter to importer is "no biggie" because there's an infinite supply of infinite cheap commodity natgas from world trade, so we'll just have some ... permanent inflation from printing money to import all that natgas. That economic model sounds really good scaled to one country, but doesn't work well when scaled to "pretty much every country on the planet at the same time and the global cheap commodity natgas market disappears".
There's probably a lot of startup opportunity in "residential natgas disappears".
Fortunately I didn’t get hit by any shrapnel. And I got a new oven out of it, which was nice. But now I’m afraid of both cooking methods.
Discoveries peaked in the 70s, normal production peaked a decade ago, strange fracking experiments to squeeze the last blood from the rocks is peaking "around now ish".
Natgas is vastly more useful to make plastics and fertilizer than to run my clothes dryer, and global demand is completely unconstrained, and economic conditions such as income inequality, demographic changes, etc are only getting worse, so its not controversial at all to claim in a couple decades your average house will not have natgas service.
Generally its cheaper to install insulation and better windows than to install more electrical generating capacity. Probably cheaper to install insulation and a heat recovery ventilator than to install natgas fuel-cell cogeneration plants in each basement or triple the number of nuclear reactors.
I would imagine this ties into long term planning such as chopping maintenance budgets. If buried gas lines can't be maintained to any standard other than lasting the next 80 years at great expense, and corporate strategy indicates not enough end user consumers will be able to pay $2000/month inflation adjusted to heat their house in twenty years, then just pencil whip the maintenance until the service shuts down.
You can see the future of residential natgas in the past of dairy milk delivery, ice block delivery, to some extent postal service, land line phones, and cable TV. You can expect a lot of gas-lighting (oh the pun) about how the replacement services are so much better (solar heating, insulation, etc)
Water heaters too, electrics have improved and the operating cost difference is really not that big. Electric water heaters might also be extremely valuable for demand response.
When it comes to space heating in cold climates though, I don't really know what replaces natural gas. Probably air source heat pumps, but they are still maturing.
When it's -6 degrees outside and you have hot water, heat, and a fireplace that are all still working you'll get it real quick.
A furnace does require a generator to run the blower, but it can be a pretty small one and it sips fuel.
I'm sure it's a different story in some parts of the world, of course.
Natural gas is 7% of the total energy consumption here (https://www.stat.fi/til/ehk/2018/01/ehk_2018_01_2018-06-27_t...).
There are 30.000 homes that have gas connection for cooking, but that is a small fraction of the ~2.700.000 households in Finland ( https://www.gasum.com/en/About-gas/natural-gas-and-lng/Use-o...).
Gas is used for heating, but it is mostly via CHP (Combined Heating and Power) plants that heat water in a district heating network ( https://energia.fi/en/energy_sector_in_finland/energy_produc... , https://en.wikipedia.org/wiki/District_heating ).
For single detached houses, for new houses the most common main heat sources are ground heat (52%) and air heat pumps (18%). with other options being electricity (8%), district heating (9%), water heat pumps (8%) and wood (5%) (Finnish: https://www.suomirakentaa.fi/omakotirakentaja/laemmitys/laem...).
As for existing single detached houses, the most common sources are 44% electricity, 21% wood, 16% oil (Finnish: http://www.stat.fi/tietotrendit/artikkelit/2018/uusiutuva-en...) .
Energy consumption in households by energy source, type of use, type of building, GWh: https://www.stat.fi/til/asen/2016/asen_2016_2017-11-17_tau_0...