While it's blindingly obvious that the current monolithic pyramid schemes used to move money from the young to the old will have to disappear, this is a big stumbling block for politicians. People already in the payout stages of the pyramid scheme will not take kindly to changes. The difficulty of changing these systems has even been touted as a reason to opposing healthy life extension technologies - so much for rules to benefit the people! It's quite astounding that anyone would rather suffer and die (and force suffering and death on billions) than face the reality that change happens and we must adapt.

In the world just a few decades from now in which the old are becoming just as healthy, active, and capable as the young, social security programs are just not needed. Not that I think they are a good plan in the first place - enforced wealth transfers from the young to the old are generally enforced wealth transfers from the poor to the rich. Not to mention the fact that it encourages people to rely on the (inherently inefficient, unreliable) government for services that are quite capably handled by planning ahead (very underrated in the present time!), insurance, family, investment, and standard banking.

Retirement in the future will become something quite different from what it is today. I think we will see two forms of retirement in this future without aging. Firstly, there will be the extended vacation. A worker will finish a career with enough money saved to go on vacation for a few decades. That should be more than enough time to decide on a new direction in life. Secondly, an ambitious worker could save enough wealth to remove the need for income - they could live on capital gains, the return on investments, and all the normal methodologies of the well to do in the present day. Given enough time, even the most lowly of jobs could produce this sort of wealth, necessary for a permanent vacation.

Of course, this won't result in a world of perpetually vacationing people. If everyone is resting on their laurels, there would be no one to produce goods and provide services. So a dynamic equilibrium would arise between the vacationers and the working - too few workers and prices rise, so more vacationers return to work (out of necessity, or looking to make a killing in a hot market). If many people are working, prices fall, so more can afford to become long term vacationers.

A future in which we have decided to treat aging as the medical condition that it is, and implemented SENS or similar approaches of periodic repair of cell and tissue damage that causes aging, will be one in which everyone who is prepared to work can be wealthy. This wealth will bring vastly greater choice and freedom. It would be a terrible shame if political concerns and simple human selfishness mess up, prolong, and cause unnecessary pain in the transition from the current state of affairs to a better tomorrow.