I definitely agree. @Rowennaravenclaw
Although most people will disagree with you/deny it, it's an absolute fact that most gender disappointment is when it's not a daughter.
Most women I have ever met/spoken to, have wanted a daughter. I mean, they don't mind if they have 2 or 3 sons (and they do love them,) but they have to have at least ONE daughter. There is just something about having a daughter that you don't get with a son. the mother-daughter bond can be very powerful and special. And they are more likely to remain close for life than a son.
I know a few women with sons only, and they fear losing them to the family of his wife/girlfriend, as the daughters usually stay closer to HER parents, and the maternal grandparents are almost ALWAYS closer than the paternal ones.
I know half a dozen women with daughters only, and they have never ever been asked 'do you wish you had a boy?' Yet, women with sons only are constantly asked 'awww, are you disappointed the baby wasn't a girl???' tilts head... 
Oddly though, some 2 generations back (like pre 1980s) most mums-to-be seemed to crave a son.
Maybe the children born to these women (who were a daughter when a son was wanted,) grew up and hoped for/preferred a daughter, to try and recreate the relationship they never had with their mother, who was so disappointed they were a girl... Just a thought.........
P.S. I'm not saying the people on here saying they wanted a boy are lying. But it's a fact that when there is gender disappointment, it is more often when the baby is not a girl.