Hi Nadine
There are a couple of reasons why they usually perform a planned CS prior to you going into labour
1 To save you from having to go through the pain of labour when it is known that you are going to have a CS. OB’s think that people do not want to feel pain if there is no need for it. Some OB’s may find it hard to understand why you would want to go through the discomfort of labour if you don’t need to.
2 Convenience When a CS is planned they consider many things such as the number of staff on duty, the experience of the staff, how busy the hospital is, and what plans the OB has.
3 If you go into labour then your planned CS could turn into an emergency CS. There is no accurate way to predict how long your labour will last and thus should your labour progress very quickly then (depending upon the reason for your CS) you may need to be rushed to the OR in an emergency situation