I think the One Child Policy is unquestionably one of the sanest policies in China, although there are myriad problems with the implementation. The prospect of forced abortions makes even ardent pro-choicers like me a little queasy, and of course sex-selective abortions and infanticide are absolutely barbaric.
Of course, that's no fault of family planners, but of an obnoxiously sexist patriarchal culture that devalues women. China is not unique in this aspect, but I can't think of many countries where rural folks would give a girl child a name like "expecting a younger brother".
I have modest hopes that such will change soon, as when I was a teacher, my top students and hardest workers were almost always girls. I think post-90s generation Chinese boys are too spoiled and lazy to lead.