Reminds me, obliquely, of Betrand Russell’s comment, “As the rising sun scatters the multitude of stars, so Galileo’s few proved truths banished the scintillating firmament of mediaeval certainties.”
Yes, and so it is with a child, ... or a grandchild!
That is a very good thought on the matter.
I have had childless female co-workers tell me how their pets are just like children to them and love them unconditionally.
However, one of them finally had a child and called me aside one day. Her child had thrown their arms around them and said “I Love You”. They knew then what I had been talking about, and how their life was forever changed and made worthwhile by that baby.