Besides it being a bit of a weird question, I do think there is some kind of sense in some cultures that fathers want to have boys.

Well, in our culture, the girl gets married and goes to her in-law's house, which becomes her house from then. The boy remains at the father's home , takes care of responsibilities, and ultimately, it becomes his home. This is the reason, people want a boy, but they also want a girl - having each is the best combination. Thankfully, God has gifted us both and we are truly enjoying their company, their difference and what not..