Why do so few people in Pakistan celebrate the birth of a baby girl?

The birth of a girl is considered a gloomy day. A daughter's role in life is to prepare food and have children..... nothing more. Whereas, the birth of a son is celebrated. Malala says that her father didn't care that she was a girl..... he fell in love with her at first sight. He even went so far as to request that friends throw dried fruits, sweets, and coins into her cradle..... something usually only done for boys.