Fabulous piece. I relate to all of it. I often think those of us who have made the choice to be childfree have considered this more than many parents consider the choice to have children.
I have written a few pieces here on medium about being childfree.
The Pressure to Have a Baby Almost Broke Me
https://medium.com/modern-parent/the-pressure-to-have-a-baby-almost-broke-me-
The Hypocrisy of a Childfree Dog Parent
https://medium.com/muddyum/the-hypocrisy-of-a-childfree-dog-parent-2eda276054d1
I Miss You
https://medium.com/the-pink/i-miss-you-56bb4631110a
:-)