I don't have any experience in this as I am 28, but I would agree with summerstorm. 63 is far from old, especially when you consider living the next 20 years the way you're living now! Talk with your dr--is he/she willing to do the surgery? I am sure there are plenty of people who have had this done around your age, especially since things like colon cancer seem to crop up as we age.
28 Year old Female
Diagnosed with Crohn's Colitis March 2000
Recent possible diagnosis of IBS-D
Tried Meds: Asacol, Remicade, 6mp, Humira, Xifaxan, Apriso, Imuran, Rowasa Enemas, Colocort Enemas.
Tried Probiotics: Align (with no change except bloating) and VSL #3 DS (AWFUL diarrhea).
Currently on: 30mg Prednisone (Tapering SLOWLY from 40), Psyllium Seed Powder, Prenatal Vitamin, Vitamin B 12 Complex, Vitamin D/Calcium, Vesicare (for urinary retention).