Well, a lot of times, when you get old you end up drooling, in diapers, with no hair, and have to have people feed you and take care of you... In some regards you do revert to a child when you age, !

Reminds me of Mork & Mindy when Jonathon Winter's was born as an adult in that giant egg...

But I like your idea of ending life as an orgasm!