None of this of course is on the chopping block. I've paid into Social Security my entire life. It's one of the few things my massive federal taxes are going to give to me in this life. Of course, this one "entitlement" (it's apparently an entitlement to at some point pull out some of the thousands I pushed into Social Security) is the only thing really on the chopping block in any form.
There was an economist who wrote a book about a century and a half ago how the economic system would eventually lead to slow growth, with ever larger recessions, depressions and economic crises, with ever higher unemployment etc. The economist was Karl Marx, and the book he explained this in is Capital. It seems the higher unemployment goes, the worse the economic crises get, the less any kind of left prognosis seems to come around, the establishment view from Paul Krugman to the Cato Institute is full steam ahead. Thus for any other kind of answer one must look outside the establishment view.