You are missing something. You won't be consuming cash; you will be consuming real goods and services made and performed by real humans.
A common fallacy is to assume that the real economy equates to the monetary enonomy. It does not.
Likewise the real generational problem in much of the western world is not the amount of cash or assets in retirement or retiree medical programs, it is the number of young well trained workers.
I am certainly not advocating that everyone should have children, or that many people without children of their own don't do much to create a skilled and socialized follow-on generation. But it is annoying when people prattle the selfish and ill-informed line that you were taking. Where do you think your Doctors will come from, if not from the school system? You think that their own parents, in addition to feeding, clothing, and housing them, buying their medical care and physically and emotionally caring for them, should also be sole support of public schools? So that you can purchase the goods and services provided by somone else's children?
Ha