I’m not sure the full story of his many “retirements” has ever been completely vetted, but that’s just my personal opinion. You can do an online search and Wikipedia gives you about as much information as Art provided himself IIRC:
https://en.wikipedia.org/wiki/Art_Bell
On October 13, 1998, Bell announced his first retirement, which was highly unexpected by his listeners. He spoke of “an event, a threatening terrible event occurred to my family, which I could not tell you about. Because of that event, and a succession of other events, what you’re listening to right now is my final broadcast on the air.” Hilly Rose filled in after Bell’s departure. Bell returned on October 28, 1998, asserting that the brief departure was brought on by threats made against his family. On May 29, 1999, Bell explained that this retirement was due to an allegation made by hosts of WWCR shortwave radio that Bell had paid to cover up a criminal indictment. The facts of the matter became public knowledge in 2000, when it was revealed that an actual criminal indictment was filed against a person who had assaulted a member of Bell’s family. Because of the nature of the crime, Bell had wanted to keep the matter private. Ted Gunderson, the former head of the Los Angeles FBI and the hosts at WWCR shortwave radio had accused Bell of the crime. Bell responded by taking legal action against Gunderson, as well as the hosts and stations. The action was resolved in a settlement in 2000.
On April 1, 2000, Bell again announced his retirement. He said that the event would occur on April 26, 2000, but offered no details other than expressing intentions to “resolve a family crisis.” On April 11, 2000, Mike Siegel was introduced as the new host of Coast to Coast AM, taking over on April 27, to an estimated audience of 22 million listeners. It was later explained that Bell had left to deal with the aftermath of the kidnap and sexual assault of his son. Brian Lepley, a substitute teacher, was convicted of sexual assault and attempted transmission of HIV and was sentenced to 10 to 25 years. Bell returned to Coast to Coast AM in February 2001. Bell noted that since his departure the show had lost a number of affiliates, commercial content had risen to an unbearable level, and Siegel had taken the program in a “different direction” of which Bell disapproved. Bell retained some authority over the program as its creator and felt his return was necessary.
On October 23, 2002, Bell announced that he would retire due to recurring back pain, which was the result of a fall from a telephone pole during his youth. Bell was replaced by George Noory as weekday host of Coast to Coast AM on January 1, 2003. It was also said that Barbara Simpson would host weekends and that Bell planned to be an occasional guest host for Noory. Bell returned in September 2003 as a weekend host, replacing Barbara Simpson and Ian Punnett as host of the Saturday and Sunday evening broadcasts. In June 2005, he scaled this schedule back, calling it a “semiretirement”, and hosted only the last two Sundays of every month. Bell went back to hosting every weekend show as his schedule permitted after his wife Ramona’s death a few months later.
On July 1, 2007, Bell announced his retirement, stating that he wished to spend more time with his new wife and daughter. He made it explicitly clear that, unlike the circumstances surrounding previous retirements, this decision was an entirely positive and joyful one and that he would not disappear completely, announcing an intention to occasionally substitute for other hosts and host “special” shows.
On December 11, 2015, Bell posted what would be his final retirement message via his Facebook page. He cited safety concerns for his family by saying “if one of them were harmed because of what I love doing my life would be over.” Throughout the fall, Bell reported several incidents where an unknown number of armed trespassers came onto his property, sometimes firing gunshots. These events have been said to occur during or around the time of his broadcasting. This announcement came a mere five months after the start of his most recent show, Midnight in the Desert.
Much as I loved listening to his show, I’m of the opinion that at least some of the reasons for his many “retirements” were largely made-up horseshit. I might believe that a family member was assaulted (since someone was convicted), but too many other “reasons” for his various retirements sound like convenient excuses. Even if some or all of the events happened, they were cover stories for a man who had just decided to hang it up and didn’t want to let the fans down. IMHO, He just got tired of the business and that’s that, Again, my opinion. I know, I know, I’m nurturing my own pet conspiracy theory on his career, but c’est la vie, c’est la guerre. I don’t believe he was actually being stalked or threatened while doing the Midnight in the Desert show. IIRC other people had their doubts, too.
It’s appropriate that he died on Friday the 13th: a fitting final paranormal twist to the King of Paranormal Radio.