Ignore the practicalities and look at the story.
They're a promise that someone stronger than you will provide for you in your old age.
(As an individual investor, I do often wonder what sort of bargains and better investment options I miss out on that investing together with two or three friends with similar retirement goals could gain me by investing together as a team. I realize that's the point of hedge funds/mutual funds, but today's hedge funds/mutual funds themselves have tiered fee structure pools based in staked investment and it never feels like an even playing field if I'm trying to manage my own investments even with the competition between hedge funds/mutual funds today.)