Although I know there are certain cultural aspect involved here, I believe there is also a HUGE issue of ego here.
I can't imagine being in a position where I would take my own life rather than face a "man" (and I use the term lightly) simply because I didn't bear the child of his preference.
Not to mention, I would have moved heaven and earth to have had a daughter in addition to my son.
Meh... Perhaps my two pennies are a little bias...