I think a lot of it is about whether you made a conscious decision to have kids or not, and what you had them for.
I was always determined I wouldn't have kids. Got overcome with the biological urge in my late twenties, but waited and considered and went back and forth - had my first child at 32. Now pregnant with no 2 at 35.
In the end I decided I had to do it, because I wanted so badly to love someone completely. I didn't want anything "out of it". I knew it would be hard work. But I had do much love in me and I wanted to give it to someone who deserved it rather than keep wasting it on people I kept elevating on my mind to make them "worthy" of it and it kept on turning out to be a disappointment.
And I do. I love her completely and it is WONDERFUL. Just what I had wanted.
I hadn't banked on the effect of her total refusal to sleep as a baby, her high needs, and how much I'd be anxious about whether I was a good enough mother. That was all bloody hard. Didn't anticipate how hard it would be for my partner either, and I know he has had moments he has regretted becoming a father.
But I never ever have. Because I only had a child because I really, really couldn't not (as opposed to feeling like it was just "what you do"), and I didn't expect anything other than what I got.
Looking forward to doing it all again with more experience and more confidence.
However I do think SN would have s massive role. Not that I assume all SN parents wish they hadn't had their kids - I knoe enough of them to know that isn't so. But if I'm having s tough day with my daughter, I can remind myself it's s phase, it will pass, she will learn and grow and change. For parents who have no realistic hope of this for their children, and whose anticipated 20 some years of heavy responsibility has instead become a lifetime of self-sacrifice and care... I have nothing but total respect for those parents, and they can feel any way they feel about it they damn well please. They have been dealt a really really difficult and unexpected hand.