I've spent hundreds of hours trying to solve the zodiac cipher?
Most people don't know what I'm talking about here so I'll explain. The elusive zodiac killer of northern California wrote several encrypted messages to police and newspapers during his killing spree in the 60s and 70s. One, the z340 cipher, was never solved. It was the one which he claimed he would identify himself. It was finally solved earlier this week by a small group of amateur code breakers though he didn't identify himself in it like he said.
So is it normal that I spent so much time trying to decipher this code? I think I probably spent around 1000 or more hours on it over the past 20 years.