I think boys are undervalued, I am due to have a boy but have kept that to close friends and family only. To everyone else we have just said that we dont know yet and have come up across only preferences for girls from these people, its so annoying! people assume I am hoping for a girl (I admit that DH and I DID have a preference - for a boy though!)
We are so excited about having a little boy! I am an only child and if I was ever asked if I'd like a brother or a sister when I was a kid I always said that I'd like a little brother. I find it very easy to bond with friend's little boys but find little girls hard work (unless they're tom boys - I was a tom boy myself so just dont get the pinkness and the dollys etc!)
An aunt said that I "have" to have a girl because all my cousins have boys and it would be "boring" to have another boy in the family - all my cousin's boys have very different and lovely personalities and I think there is definately room for another one (that aunt has never even seen my cousin's boys so who is she to be bored of all the boys in the family??)
A friend said that I have to have a girl so I can take it shopping!
and various others have just said "I hope you have a girl", "I have a feeling you'll have a girl, I could see you with a girl" (so what? you cant imagine me parenting boys?) or "are you hoping for a girl?"
I saw a documentary a while back called "wanted, new mum and dad" about kids waiting to be adopted and people who claim to be desperate to be parents often request girls only and there were lots of little boys "left on the shelf"
Deffo a preference for girls these days IMO