Fair point re: US! Though that doesn't mean it's not a problem.
Re: demographics. It's relatively straightforward: To keep contributions constant while supporting more people, you need either:
-more people via immigration (which is extremely tricky to get right) who are net contributors, not beneficiaries of social systems
-massively increased productivity through innovation/technology
-cut benefits from social programs
If you do none of those things, the systems will either collapse or you need to raise taxes/mandatory contributions which are de-facto taxes.
Re: demographics. It's relatively straightforward: To keep contributions constant while supporting more people, you need either:
-more people via immigration (which is extremely tricky to get right) who are net contributors, not beneficiaries of social systems -massively increased productivity through innovation/technology -cut benefits from social programs
If you do none of those things, the systems will either collapse or you need to raise taxes/mandatory contributions which are de-facto taxes.