> retirement funds are built with the assumption of infinite growth
Of workers. Because retirement funds take money from workers to pay for retirees.
Assets and productivity, on the other hand, can grow a lot more than the population. Right now it's considered communism to tax assets. Once we get over that taboo things'll go a lot smoother.
That would destroy the incentive to save. Why put aside a dollar now, only to have it taxed every year? Better to spend it while it’s whole.
That changes future value calculations, too.
These are things not to mess with lightly.