I may well misunderstand how Social Security works. However, the point of my comment is that it's hardly the only system to which one might contribute funds, incurring some future obligation of (re)payment on the part of that system, which is later discharged using funds that were most recently in "someone else's pocket".

Either it's a trivial point that applies pretty broadly outside of SS, or you meant something more significant and I'm interested in knowing what that is.