.... protect you in the event you get struck by lightning, but that's it. I love arguments like this. Entertains me while I'm at work. Anyway, to further everyone's entertainment and to avoid getting myself embroiled in this, I will refute the statement that rubber protects you from lightning. Note that this includes car tires! It is the METAL in a car that protects you believe it or not. Your rubber soles or tires would simply become puddles of rubber goo after getting hit. from NOAA.gov "Rubber-soled shoes will not protect you from lightning. While rubber is an electric insulator, it's only effective to a certain point. The average lightning bolt carries about 30,000 amps of charge, has 100 million volts of electric potential, and is about 50,000Â°F. These amounts are several orders of magnitude HIGHER than what humans use on a daily basis and can burn through ANY insulator (even the ceramic insulators on power lines!) Besides, the lightning bolt may just have traveled many miles through the atmosphere, which is a good insulator. Your 1/2" (or less) of rubber will make no difference."