Hahahaha! Nothing!.. not sure about you guys but over here, patching is slowly becoming a rarity here...I once whipped out a patch kit and a group of riders asked what was I doing! Interestingly enough, not many people know how to patch a tube and most of those that do just go out and buy a new one. It may not even be just because they can afford it! hahaha!
Kudos to everyone that still patches tubes!