Rational defense of Christianity?

[Nope]

There was a forum member on here who made a valiant stab at a reasonable defence of Christianity, Arcanus I think.
He was obviously a fearsomely intelligent man who used his brains to justify his beliefs to himself.
Even he was less than convincing, but no one since has come closer to a proper justification for their delusions.

As silly as it may sound it is only through the heart that it is possible to find God. A great atheist CS Lewis, looked into his heart, and saw something that he could not deny. He became one of the greatest christian authors, and everyone knows him from the books about Narnia

Your heart is a synonym for your emotions. I point that obvious fact out because sometimes Christians make it sound like their reaction to Jesus occurred somewhere other then their minds.

I have a theory as to why people are religious. Our minds are programmed to seek out patterns and that is why we sometimes see faces or animals in clouds. Maybe it is an instinct in some people to look for patterns in the random events of life and try to see the picture or reason behind everything.

Also, if someone is clinging to religion there is probably an emotional need or vulnerability that religion eases for that person. For example, someone from an abusive home might become an functioning, intelligent, nonabusive adult but still have a need to believe that some parent figure loves them. It doesn't matter how intelligent the person, we are all vulnerable and weak at some point in our lives. Some of people deal with those low points in their lives by seeking out religion.