Because they may be scared of natural birth. I was so so scared and didn't commit to either birthing decision all the way up to my due date... I wanted natural but was so incredibly scared I couldn't commit, plus my dr was happy to let me choose.
Ended up having emergency c section after i was hospitalized because my son wasn't moving and I started gushing blood. Was a little relieved though to be honest. But next baby I'm going to try natural as the c sec recovery is unbelievably excruciating for weeks. It's helped me get over my fear of natural birth lol