Same here, my wife had a very traumatic birth (placental abruption) and a lot of physical pain for at least a year after the birth. My mental health took a huge dip because becoming a dad unlocked a lot of traumatic memories of my own childhood (I've since had therapy, long overdue).

For us, having another child is just not worth it - risking my wife's physical health (and life!) and my mental health, we decided to stick with one child. Plus I don't think we have the capacity to have any more children. Our son is happy and started school last September, his teacher recently told us that he's very positive in class and a 'breath of fresh air', so being an only child is obviously not doing him any harm!

I come from a big family (5 siblings) but for most of the time, I would play imaginary games on my own - so even having siblings does not guarantee playmates. In my experience, siblings often dislike each other intensely - how is that better than an only child?

The future of families is one child per family, we're just ahead of the curve!