N/A, the old tire analogy is interesting to me. As my pouch approaches 24 years in age I have had a combination of the same thoughts - not eating well over the years, chronic pouchitis, not being able to keep the bacterial levels appropriate due to consumption of antibiotics, bacterial overgrowth due to the lack of a backsplash valve- all of these factors conspiring together to wear the pouch down. Most tires are good for at least 50,000 miles, and then you buy new ones. The problem is that all of us with 20 plus year old J Pouches already have 50,000 miles on it, and we can't buy new ones. We are all destined to drive our J Pouches into the ground, for better or worse.