Well, there are lots of religions that could be described as over the edge. Try logically explaining that a dead man rose from the grave and flew up to heaven. Try explaining that a virgin was conceived by the holy ghost and had a son without intercourse. Most religion are illogical. No reason to call people mad for their nbelief, just because we don't believe in it.
I read an article about a woman who was preparing to kill herself because she just buried her only son. She got everything ready and wrote her suicide note, but her best friend insisted that she went dancing with her, just to cheer her up. When she got there she heard a music that made her want to dance,. She had never heard the music before but she couldn't stop dancing. She asked who the singer was and they told her was Michael jackson. The music she was dancing to was Jam.
This woman strongly believes that he saved her life and brought her out of her depression. It is stories like these that make some people want to worship the man. The best thing that one could do is to let these people tell their stories and listen to them, instead of call them insane or crazy.