Earlier quoted context omitted.
The problem with SS is that if the 25 year olds don't keep paying, there's no money to give to the 75 year olds who paid their whole working life. The money THEY contributed is long ago spent. It's much harder to tell the 25 year olds to keep paying FICA and save for their own retirement.
If 25-year-olds are in a booming economy (a result of decreasing the economic controls), the taxes won't hurt nearly as much. Also, the knowledge that those are getting phased out and are a one-time thing will help a great deal. The end result is a society where entire generations of people stop viewing each other as burdens and resources (young and old), and instead as individuals, with their own lives and responsib…
Our older generations must be looked after by the younger, instead of just discarded when their utility is below market average.
Your scenario works when everyone is on a fair and equal playing field, however for those that are disadvantaged, you are quite literally saying they must starve or be killed for the good of society. That my friend is a cruel world, and not one which I wish to strive for.