I do often wonder why, when there is gender disappointment these days, that it's when a boy. I have yet to hear someone be disappointed that it's a girl. (Not for the past 35-40 years anyway.)
I'm not saying people don't want boys, and many are happy to have a boy; just as happy as if they had had a girl ... But it's just when there is gender disappointment, it's always when it's a boy. (Largely in the Western world. In other cultures they revere boys, and are very disappointed if the first born is a girl.)
I had two girls. I definitely wanted a girl 100%. If my second had been a boy, I actually wouldn't have minded. But I'm so happy to have two girls ...
I genuinely wouldn't have been happy to have two boys. I can't explain why... I just always had a very, very strong desire to have a girl. DH really wanted girls too, but like me, would been OK if the second one had been a boy.
I mean, of course, you still love them, don't you? But I am so happy we had girls. No way in hell would I have kept having more to try and get a girl if I had had 2 boys though... I did used to know quite a few families (when people used to have a lot more children pre-late 1980s,) who had 4 or 5 boys as they had just kept going to try and get a girl. I also knew several families who had all girls though, who kept going to try and get a boy!
I do think (if their IS gender disappointment, that more women are disappointed with a boy ... I wonder if there is some deep rooted thought in a woman's head that tells them that if they have a girl, they will have a friend for life, and someone to look after them when they're older - because men tend to be more likely to be lazy and thoughtless. It's always the girls/daughters who look after the older family members. Very rarely the boys/sons. IME most men do fuck-all for anyone but themselves.
I mean, you're not guaranteed that a girl is going to be a friend for life and help you when you're older, or that a boy will fuck off and do his own thing and not be arsed with you 90% of the time, but those scenarios are more likely than not to be fair. In the experience of most people I know/have known.
Some women I know (mostly 50+) had/have a mother who wanted a son, and ended up with a daughter, and never stopped letting her know how disappointed she was. Some went on to have a son after, who could never do wrong, and was her clear favourite. These mothers never hid that fact!