Where on earth are you going with this. You're replying as if I somehow think nobody should have kids. Nowhere did I say or even imply that, no did I denigrate those that choose to. I simply refuted that those who choose not to are leeches simply by their lack of offspring. That's a dumb statement. No society on earth has everyone reproducing; that has never and will never be a thing. There are other ways to contribute to the collective good, and society as a whole that have nothing to do with having children. Yes, people need to reproduce for our species to succeed, and I respect those who choose to do so. That doesn't make them superior though, and calling me a leech for choosing not to is asinine.

So when I invest in the future by planting fruit trees I become A leech when I collect fruit off those trees?

It's infuriating that you don't see how incredibly fucking stupid that is. It isn't a universal truth either; it hasn't always been this way and it isn't even this way all over the world today. Hell, it doesn't even actually work currently in the US, how many retired people do you know that actually only live on Social Security? Basically fucking none because it is nowhere near enough money to retire, despite paying in an absolute fortune over their entire working lives. That same money saved in almost any other imaginable way would do more to support retirees than the awful fucking system we have now that relies on the next few generations to pay.

That's because what you are espousing the benefits of like it is the obvious and only system is just a forced fucking ponzi scheme.