There are some life experiences that you just can’t understand until you have lived them yourself. For example nothing can truly prepare you for becoming a parent.
Read all the books you want and watch all your friends have their own kids—you will never really get it until you’re the one doing the 2 a.m. feeding or calling the pediatrician about how, exactly, one might safely extract a Lego from a child’s right nostril.
A similar you-can’t-understand-until-you’ve-been-there rule applies to the often poignant transition from being your parent’s child to being their caregiver.