"O.K so you really believe what you believe but you cannot disprove "Christianity""

What do you mean by "Christianity"? Is a person who believes that Jesus existed but was not God a Christian? Is an atheist who follows as many of his social teachings as Christians do a Christian? Is a Roman Catholic/ Happy Clappy (insert your own variant out of 10000) a Christian for that matter?

And as for 'disproving' it? What is there to disprove? You make historical assertions, it's up to you to support them with evidence. Can you disprove that the Duke of Wellington or Jack the Ripper was the Son of God?