If we remove the exports we nothing.
That may well be correct.
But I think the answer is Vickers Viscounts. As a young lad at Essendon aerodrome I loved the whistle of the RR Darts, not that I knew then what they were. Why did we ever bother developing aircraft after they were invented?
Because people back then had imagination.
Renewables can't do baseload? Wait a while, they will. Renewables not as cheap as coal? Wait a (short) while, they will be, if not already.
Climate change is bullsh1t, therefore fossil fuels are infinite? Mmmmm, don't think so.
Maybe replacing fossil fuels on the ground will keep them available for use in the air a bit longer.
Don't care because you will be dead by then? Mmmm, selfish?