This will not surprise anyone who knows about computer

How in the name of Hell and of every variety of evil did Norton Antivirus ever become the best-selling commercial protection software? The damned thing is as damaging as the viruses it's supposed to fight. It has just caused me the most elaborate and unmanageable computer crash I have ever seen, which even led to me being physically injured (as I was removing the battery and the power cable, the only way I could see to shut the machine down, it fell over straight on my ankle, where it cut right into the flesh). To misquote the old song, Norton is a moron.