From up here high on middle age I see two vistas, one on either side of the mountain.
To the left is the plain we have already experienced. Sloping away to the right is the terrain we are about to explore.
The two don’t look too terribly different, but from one very important aspect they are: Fertility. Once you reach the age when you are no longer able or interested in having sex ever turn into babies, everything relationshippy changes.
Forgetting what we already know isn’t possible, but recasting it for an altered circumstance will likely be valuable, don’t you think?