> power tools While I agree with your other examples, I think power tools are a bad example. I'm using a wired drill and circular saw from 20 years ago, which

> power tools While I agree with your other examples, I think power tools are a bad example. I'm using a wired drill and circular saw from 20 years ago, which both still work perfectly. How is buying a modern power tool which requires disposable batteries that 99% of people will dispose of improperly a better choice for the environment? My guess is that the industry shifted toward batteries because of convenience, not efficiency, but I could be wrong.