Hundreds of proofs of nothing!

[Oldandeasilyconfused]

I believe in faith. If one believes in something, it is real for him.

Quite probably. There is a Christian sect in the US in which members believe snakes cannot harm them. A gratifying number have died from snake bite (photos with link)

Snake handling or serpent handling is a religious ritual in a small number of Pentecostal churches in the U.S., usually characterized as rural and part of the Holiness movement. The practice began in the early 20th century in Appalachia, spreading to mostly coal mining towns. The practice plays only a small part of the church service of churches that practice snake handling. Practitioners believe serpent handling dates to antiquity and quote the Book of Mark and the Book of Luke to support the practice:

And these signs shall follow them that believe: In my name shall they cast out devils; they shall speak with new tongues. They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover. (Mark 16:17-18)

Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you. (Luke 10:19)

http://en.wikipedia.org/wiki/Snake_handling