even if gas runs out in twenty years we can kill off the planet quicker by going back to the coal mines (approx 250 years worth still under us ) and making towns gas, lots of work doing de-conversions for the younger generation
At the moment that is what we will have to go back to as we haven't got anything to produce the power required to run all electric boilers, electric cars electric everything. They would have to build 10 nuclear power plants to keep up.