No, I don't ride distance too much. My commute is 34 miles round trip, I usually ride something like that, maybe a little more, on Saturdays if I ride my club's breakfast ride. Almost all my riding is in and around Fort Worth and most rides start from my house, so in a worst case situation I can get a ride home from a family member. The worst problem I've had so far was a mishap that made my bike unrideable (not tire related) at the beginning of a charity ride. I walked the bike home 4 miles.

I usually carry one tube and two cartridges.

Also I think I said upthread that most of my riding is on Schwalbe Marathons which are supposed to be flatless (althought nothing is 100%).