Why is everyone so against BPD w/o DS?

My doctor says he can either do the BPD or he can reconstruct my pouch which is not something i want to do since my pouch size has only increased to 8 oz. I've got some hoops to jump through, but on 10/13 i broke my foot so i'm not able to drive till it's healed. So all the meetings, therapy etc is put on hold till then since i have no one to drive me into the city for my appointments. .