Maybe... How much should childless people have to pay for other peoples' children?

The childless should pay enough to ensure there are younger people to do the work of supporting the childless when retired.

Using foreigners to fill a demographic shortfall is unsustainable/shortsighted.

That said, I'm in New Zealand and too many young adults emigrate because (A) our economy sucks and (B) richer economies like to employ NZ citizens (NZers love international travel/work).

more than people who have children? that's logical. you get cuts for the hard work you're doing.