Originally Posted by
HillRider
Most casual riders have the same level of mechanical knowledge about their bikes as they do about their cars; NONE.
+1
If you think changing is an easy task you'd be amazed at the amount of riders that have no idea how to use a quick release skewer.
The last time I got a flat I had to walk it home, fortunately I was only a couple miles out. Since then I try to keep a pump/tube/tire levers on my bike but I have so many bikes and so few supplies that I often ride "bare."