Because conspiracies are the cure for boredom.
And much more fun than the truth.........
I think he was probably a severely depressed person who became unhinged by some ‘final straw’. It wouldn’t be the first time.
(See higgmeister’s post 43.)
A lot of people here seem to be more interested in venting their personal peeves and promoting convoluted conspiracy theories than they are in the truth.
Truth is so uninteresting, especially when it doesn’t jibe with our pet resentments and theories; so we ignore it.