After DD was born, I intensely desired a second child, having been an only myself.
However, DH was against it and after discussing the matter a lot I respected his choice. I intensely grieved for a couple of years to "let go" of this ghost child whom I would never meet, but eventually started to appreciate the positives: more money, more free time, more time for DD, less strain on our relationship. I came to such a resolution that I even started selling Dad's old clothes on Vinted!
Predictably, after some of his best friends had kids, now DH is saying he is "not so against" the idea of a DC number 2 anymore. But I am now 40 and feel too old, and I don't want to open a potentially painful chapter. Still, I feel torn at times.
Has anyone regretted not having (or even trying) for a second?