This is how much I believe in what you folks are calling 'God'
The gospel according to my homeboy, Xenu
To cure overpopulation in his Galactic Confederacy, Xenu drugged and paralyzed billions of people after first summoning them for tax inspections, and froze them in ethylene glycol (antifreeze). Then he flew the paralysed people to Teegeack (the name Earth had then, according to LRH) in interstellar rocket planes, which looked like DC-8s, but without jet engines. He stacked them round volcanoes and killed them with hydrogen bombs lowered into the volcanoes.
Take that in for a second.
In Scientology, people are surrounded, covered even, by souls called thetans which cause people to use drugs, get depressed and enjoy Tom Cruise movies. Xenu didn't want the thetans to reincarnate, so he forced them to watch confusing films with horrible lies for thirty-six days. The poor thetans were told they were God, the Devil and Christ. They were all these things together. And they were confused so they believed it. Then the souls left the cinema and started clumping together. And today these souls are clumped round you and me and everyone else. And we can’t get rid of them unless we pay the Scientologists thousands and thousands of pounds, dollars, or euros. It's worth noting that belief in this movie story would require that Christianity be considered nothing more than a delusion picked-up while watching a movie. This contradicts the Scientology claim that their business is compatible with Christianity.
Unfortunately for the Evil Lord Xenu, L. Ron Hubbard made a wonderful discovery: once you have signed over your life savings to the Church of Scientology and gone through thousands of hours of "auditing" sessions with an E-Meter, you can be "clear" of all the "engrams" affecting your subconscious (reactive mind). There are many of these "engrams" stored in each person's brain and auditing just keeps on uncovering more of them going all the way back through all your past lives to the time of the Evil Lord Xenu. This is just the first step. Having been freed from the reactive mind, the "clear" can then go on to become an Operating Thetan, with immense powers to control space, matter, and time.
To become an Operating Thetan, of course, means giving more money to the Church of Scientology and going through several more levels of training. Only during the OTIII (Operating Thetan III) training is a person deemed fit to be told of the above story about Xenu, ethylene glycol, and the volcanoes. OTIII is a very dangerous process and the information revealed in it is deadly to somebody not prepared to handle it. Anyone who has read the above without first going through all the levels is at grave risk of death or pneumonia. Oops, you already read it, didn't you? If you believe all that, Scientology has a "bridge" to sell you, and it ain't cheap.
All the same crazy
In rational terms, logic and evidence appears to dictate that there almost certainly is no requirement for God to exist in the monotheistic sense, and it can be argued that the existence of God leads to logical contradictions.
So you see what you have to do to believe...