geezerdom
That stage of life, or condition of life, in which one can no longer feign youth.
Uncle Bobo fantasizes about learning how to windsurf, but geezerdom beckons.
geezerdom
A geezer's personal kingdom (personal world view). Rather than lamenting the infirmities and liabilities of advancing age (though not wholly denying them), the geezer revels in the psychological and even physical freedom resulting from advanced age. No need for schedules, no worries about what others think, etc. The world is the geezer's oyster--his or her geezerdom.
The old gent smiled as he considered his geezerdom.