Star, your reasons are the ones I list too.
dd2 has taught dd1 so much - stuff we couldn't even begin to cover half as well, just through being here.
I too worry about when we are gone - I do not want dd2 to feel she has to cope with it all.
I think a 3rd child would add to the dynamics in the ways you describe - I see it as beneficial for both dd1 and dd2. dd1 woudl see the 2 younger ones interacting (and see the nurturing, carign stuff that dd2 would thrill to do), and dd2 would have to learn that she does not get everything her way - a sibling who stood up to her and shouted back would be a great thing for her (don't get me wrong, she is no bully, but he has learn that dd1 will give way to her in just about everything - dd1 cannot bear to see ehr upset. Normal sibling stuff, but I do wish dd1 had a "normal" example to learn form - another child contributing a "no, it's mine!" would teach her so much
)
I think you might b prtially right, wrt the coping bit, Star. But I see it the other way around, I think.
Another baby/child would obviously see me more stretched, and more things may slip through the cracks (by this I mean housework type stuff). But I really can't see, past the obvious knackering newborn bits (and, tbh, both mine were really good babies, so I naturally expect a third would be too
) how anther child would really add to the chaos.
the chaos will be here without that third child - there's not much that will make it go away, but we do have it down to a dull roar now.
I think a part of me sees having a third child as a way to get htings right.
dd1 was a difficult baby in as much as she has such severe problems. I honestly shudder to think back to how she was - shut off, blank, catatonic. I have few photos, and no video of her before she was 2.6 (which, tellingly, is when dd2 was born). I couldn't bear to have evidence of what I was trying so hard ot forget existed (the issues, not dd1!)
and poor old dd2 didn't have much of a babyhood, as that was when I was swiinging into my "right, let's sort htis out" mode - dx, ABA, statementing - you know the score.
I now have the space and time to have another.
dd1 is doing excellently at school, dd2 is at pre-school, and if I were ot fall miraculously pregnant tomorrow, she would be at school full time by the time the baby arrived.
Our not coping days are less frequent now. even the school holidays are pretty calm (we did all get a bit cabin fevery when snow bound, but then sow me a family with young childrne who didn't!)
most things we want to do now work out ok. holidays are ok, theatre, cinema, eating out - all ok. dd1 coped with a music festival, fgs. we get out and do most things we want to do - not without panicking and planning, but the panicking side is lessening every day.
and on the days wher eit all goes wrong? well, they happen, and will continue, with or without a third.
crucially, I am getting better at not spiralling int the depths of despair when the bad days do happen. that has been a big change.