Many people ask why we need to protect our valuable electronics.  The answer is quite simple.  You have to. 

Each year we buy the latest technology, the fastest, the smallest, and the most sensitive digital equipment in the world. 

Then we plug it directly into unprotected ac and data lines. 

With minutes or months the equipment will break in a ball of fire from a bolt of lightning, or die a quiet death from constant bombardment of bad electricity.