Why would a father rape his own child?

It reads like a script from a movie. A man rapes his own daughter resulting into a pregnancy and birth of a baby girl. Full of shame the girl flees home but returns after 17 years with a daughter who was fathered by her biological father.
Victims need to see a counsellor in order for them to deal with the emotional trauma. (Net photos)
Victims need to see a counsellor in order for them to deal with the emotional trauma. (Net photos)
Donah Mbabazi