jm iG¡úº¿/ J«nòKjxÞg.*rÿdE$÷L©You were on the right track a bit with the aging population argument, except of course you missed that the same could be used for families. At least that was an attempt.
https://whatsonchain.com/tx/91e665c0b35fbbcf7b303eb47f541dd6af3a3b683ea57c1407c15b0a9bbf6a3d