These men may have reached an emeritus state, and I'd never deny the wisdom and experience gained by someone who has lived six-plus decades, but their very life choice has of necessity been one of sterility and refusal to engage in the dance of creation whereby one attains true grandparent status.  I know this is "just" application of language by Francis, but he insists on using idealized family relationships where none exist in reality.  How much wiser and broader would these old men's perspectives be had they been allowed to be ACTUAL grandfathers -- with all the messy relationships and influence by and with women and children that title implies?  They can all live to be 150 and still never experientially understand the pressures and joys of living within their own families, and we are all the poorer because of it.