Ilya Somin, one of the libertarian-leaning types at Volokh.com, had surgery and blogs
about the advantages of an extended family (someone can stay with you to help you over the first days of recuperation). As a friend told him, they're good insurance against risk.
Of course, if he were a good libertarian he'd go to the market for home health aides.
(Since my wife had her foot put in a cast on Wed, I feel a link.)