We are driven to do few things.
Have kids, preserve the lineage.
Survive, in order to have kids.
So as far as nature's concerned
Once you've had enough children
you're not needed as a man
And for a woman, once you're past child-bearing
You're on the scrap heap of the genes.
We do of course all die
in the end.
Survival is a relative matter.
Those stillborn in the womb
are not so very different as those who live to a hundred.
Grief is another matter altogether.
to have sex
Both quite petty in the grand scheme of things
Appreciate your life
Love a moment
and then another.