I can see that this could really be a commentary on the end of life however. After your kids are raised and your spouse is gone.
That’s assuming both that your spouse is gone and that your children haven’t turned out lemons and left you bringing up your grandchildren.
I see his point, really. I just don’t find it applicable, except in the most vaguely-spiritual way, to my life. But there’s nothing wrong with that. His readership includes all kinds of people.