Others have pointed out the fundamental and pragmatic differences between treadmills and power tools. E.g. it's unrealistic (excluding the long term) to keep pe

Others have pointed out the fundamental and pragmatic differences between treadmills and power tools. E.g. it's unrealistic (excluding the long term) to keep people from putting a treadmill in their living space. Of course we could debate each difference, but then we're just discussing the differences between treadmills and power tools. Analogies are usually a lazy tool in the field of debate - you can state them easily, but they provide nothing of substance to anybody who doesn't already agree with you, unless you're using them for a much more specific point than "X is like Y, therefore they should be treated the same". Make your argument about treadmills, not about power tools. Also note that power tools are highly regulated and have many safety features.