" Though Kurt and Jimmy were not “family,” I invited them to be, and that invitation can sometimes be even more intimate than the connection to any blood relative. There was no biological obligation here; we were bonded for other reasons: our parallel spirits, our love of music, and our mutual appreciation. You cannot choose family, and when you lose family, there is a biological imperative that implies a built-in type of mourning. But with friends, you design your own relationship, which in turn designs your grief, which can be felt even deeper when they are gone. THOSE CAN BE ROOTS THAT ARE MUCH HARDER TO PULL. "

― Dave Grohl , The Storyteller: Tales of Life and Music