Our parents always wanted a son. They had four girls. I was very aware of the comments other people made in my hearing regarding the next expected baby, and despite me being happy with sisters, it seemed obvious that we were second raters, really, cos they wanted BOYS to carry on in the family business.
Actually in all seriousness, it is terrible to state 'oh you must be hoping for a ...' or 'you must be disappointed it is another ...' Hells bells. It made me feel not-good-enough as though I had failed by being the wrong sex, from the moment I was born By the time the last daughter arrived it seemed less of a cause of celebration and that was awful - am sure her self-esteem growing up with the knowledge that she was the fourth-wrong-sex-child.
Years later when we had kids of our own, our mother admitted she would have tried for a fifth but had already defied the doctors advice when she had high bloodpressure in her third pregnancy and they had insisted that she be sterilised after she deliberately went ahead with another pregnancy. The decision to be sterilised affected her more deeply than anyone realised.
That knowledge didn't improve my feelings of self-worth either.
And from the other side of it - I had two dss in my 20s and then a dd when they were 12 and 10 years old - yes, she was planned, I didn't care a jot about the sex, everyone said 'you must have been so pleased to have a girl at last', etc, it is often assumed that she has a different father (nope! same dh!) or that we have been ttcing for a decade (no, circumstances dictated the pace )
People will always be nosey, tactless, insensitive - but I just wish they would shut up, it hurts the parents feelings, but especially shut up in front of the other kids