I know it sounds obscure and Klingon to say it, but protecting future generations from climate change is a matter of honour.
As far as scientists can tell, climate change is the most serious major threat facing people a couple of hundred years from now – worse than nuclear proliferation, worse than other environmental problems. If the icesheets really start melting, they will have major problems. How many times in history have dozens of major cities been moved?
At the same time, we have the technology now to stop climate change by abandoning fossil fuels over the span of a few decades. It will be expensive to do that, but it will bring other advantages. Fewer people will die from air pollution. We won’t need to import fuel from dangerous places or produce it in incredibly destructive ways like the oil sands.
It will probably use up a lot of land, but it seems possible that it can be made to work in a way that is fair for all of humanity, with everybody living in comfort.
We are lucky that we live in this generation – the one that will start to pay the cost of decarbonization. That is far preferable to being part of the generation when the actual warming of the planet peaks after all the lags kick in.