Because inquiring minds want to know.
In a new interview with the UK's Uncut magazine, he says, "I hate to say this, but politically speaking, there was more freedom in San Quentin when I was there than there is in the streets of America now."
"Everything you did this morning has been recorded on film. That wasn't the case in prison when I was there. They might as well put a wall up: they've got us all under surveillance. In jail at the time, you could play poker 24 hours a day if you wanted to. Now, you can't even smoke. What a world we live in. You can't smoke in a pool hall. What has happened?"
Well considering Merle was in prison for three years clear back in 1957 that might just explain the lack of cameras when he was there. The smoking laws, well maybe you have to be a smoker to appreciate that one.