Why are people so obsessed about it I have children? I'm married and we've decided we don't want to have kids. It really bothers me when people say "oh you're missing out, that's such a shame". Please think about what you are saying. It doesn't matter if I'm gay, infertile, poor, depressed, or just don't want them. Please keep your judgements to yourself or even just stop judging others.
My wife spent 35 years of her life never wanting kids, and suddenly was 51% for trying to see if we could have a kid, with much trepidation. It worked out, and almost every day, certainly every week, she says she's so thankful she changed her mind just enough that she could be a mom. It is nothing like she envisioned it. We also have friends who didn't want kids and then regretted it, and my wife sees her self in tho…
Me and my partner are in a similar situation as you and your wife before your first kid, with some complications added on top.
Those complications will make it near a certainty that we will only ever have a single child. And I worry sometimes if deciding to have a single kid is just me being selfish and wanting a family, rather than thinking about what would be best for the child (for instance having siblings).
Our situation would also mean no cousins from her side, and my siblings all have children in the late teens by now.