The reasons for choosing a style are purely personal. The most common reason for choosing a gender is to balance the family scales that are already tipping one way or the other. Some couples choose to have one child of each gender.
Sex selection can be for medical reasons. Some hereditary diseases affect only one sex or are more pronounced in one sex than the other. Muscular dystrophy, for example, disproportionately affects males, so choosing female embryos reduces this risk.
Cultural, religious and family traditions often influence the choice of gender. Parents who have personal preferences have many reasons for choosing a gender. We've put together a collection of sex selection methods in Kenya to help you understand how the process works.