Another c section??

It's come down to the wire. I have had to have an emergency c section with my second and now they are telling me I have no choice (basically) but to have another c section with my third. I know the risks involved with trying naturally,  but they want to schedule it a week before my due date 10/29. Why? Is it Bc it's more conveinent for them? The doc was all like ok hows oct 24th? Why can't it be on my due date?