I get hammered by the code book experts, when I protest indiscriminate grounding. The grounded conductor and equipment ground wire is one half of a lethal circuit.
Domestic electricity has been around for approx. 100 years. Switches did not require a grounded yoke until the last of the century. They performed without a major problem, for 90 years.
Read the code making panel comments on the cycle prior to passing this rule. It was a complete reversal from the next cycle. What happened in the 3 years? Someone's wife probably received a static shock, and it was thought grounding would prevent the occurrence. I don't know the logic.
