Rather than put all the blame on those demographic groups you alluded to, I prefer to see this issue as a failure of western democracy to plan for the long term.
It is the system that needs to be changed out. The people will change later.
I have invented a different kind of democracy: this democracy has no political parties (and a few other things). It takes about three hours to read my book, which is available for a free read.
If you cannot spend three hours to read my book, then I would say you are only a little more enlightened than the rich guy with a $500,000 RV travelling across the USA getting three miles to the gallon. The current system will maintain this wasteful activity as a god-given right.