Earlier quoted context omitted.
Well there is evidence but it's not evidence that you're presently accepting. The Bible is a sort of evidence and people's testimony is as well. For my part I believe in God because he speaks to me regularly and I'm the last person you'd expect that to happen to. I was minding my own business when I started hearing from God. Everyone I knew at the time was totally shocked and it took me over two years to accept what…
You have presented the only religious argument I can't actually argue with. I can only humbly say I haven't had the same experience as you, and if I did, I would freak out.
One way of proceeding to argue with it, for example, would be to say, "how do you know you're not mad?".
[Amusingly half way through writing this comment, this radio programme started: http://www.bbc.co.uk/ahistoryoftheworld/objects/pZ-Jq-iaTOia... It's about an object that apparently people used to use to talk to god!]