I can't argue with that, would be much better if rechargeable but then you would have to be able to do that locally. Never left a cartridge behind anywhere (or a tube or section of chain etc) but I'm sure others do. To be fair when I started using them I was commuting so a puncture would be time critical.I was referring to use and waste culture. Energy and materials used to produce this thing. Also people who buy it tend to drop it where they were using it.