Sure is evidence . . . where's your evidence?
Our ability to experience something spiritual or mystical is the result of a specific hereditary gene called 2 (VMAT2) that releases neurotransmitters such as dopamine, norepinephrine, serotonin, histamine, and GABA which all create this God Illusion within some of us.
This neural pathway is reinforced by religious indoctrination, thus making the delusion stronger and more permanent. Combined with psychological tools such as Shame, Guilt, Punishment, and Reward religion anchors itself into the psyche, and what is nothing more than a genetic illusion becomes a religious delusion. Fortunately, this gene is not passed down to everyone, and when it is, the neural pathway can be suppressed and defeated by not indoctrinating the brain at a very young age (e.g. religious rituals, schooling, etc.) and through critical religious thinking which is why more and more people are Atheists, NonTheists, and Agnostics.
There is absolutely no evidence of some external, quasi-internal, mystical, what-have-you deity/god . . . there is, however, plenty of evidence that through evolutionary processes this illusion of a god/thing has taken place.