It is based on a medical choice. I chose to have a c-section because I have major prolapse of my bowel, bladder and uterus. It causes me to have incontence of my bladder and rarely of my bowel. I know that these things can cause major issues, and some doctors don't understand that.
I got all of my advice from homebirth midwives, my private ob that I paid to see but didn't have antenatal care with, my Gp etc. When I went to the hospital with all of this information the doctor said "vag birth is fine". I disagreed and it was my choice. I think the doctor is trying to allow you time to think about it and try to talk you out of it, but at the end of the day you have a medical reason for a c-section and you have the choice, so just tell the doctor your choice is a c-section and you want to book it in. you are allowed to request one, so just know that you can have one and stand firm if this is what you know is 100% the best choice for your situation.
A homebirth midwife put it into perspective for me... "at the end of the day, the doctor gets to get on with his life after your birth no matter what the outcomes are, but you are the one who has to live with the problems it can cause for the rest of your life".
I just remembered that when I talked to the hospital and even said "I am the one who will live with this, so it is my choice".
Turns out it was the right choice as I have since been to the expert in Australia in my issues and he was so glad I had a c-section after her saw how bad my problems were already.