You present a very localised view on a global problem. The world woudn't be spending 20 Trillion to just keep JFK open (laudable objective that it is). What about the hundreds of millions of people in Bangladesh, Kiribati, the Maldives etc etc whos livlihoods are in jeopardy? They contributed almost nothing to the acceleration of the warming, and similarly got no benefit from it either. Yet they disproportionately bear the cost. Are you going to be the one to go to these people saying "Slow Global Warming? Sorry, but the maths says you're just not worth it"