Problem with faith, in a nutshell

So, here's my problem with faith, in a nutshell. There is absolutely no means for validating a supernatural (hence why we call it faith). All we have access to is material. From all that we can determine, our feelings, choices, and beliefs all have a natural, material basis.

If we presume a supernatural exists that acts on our natural world, then this supernatural power must act on nature through some sort of natural<->supernatural communication channel. The problem with such a communication channel is that there is absolutely no way to validate the authenticity and proper translation of the messages/events. Again, this is a call to faith because the identities, actions, interpretations, and motives of the supernatural powers cannot be known. That is, there is no way to determine if the natural message to the supernatural has been properly delivered and interpreted, nor can we have any validation of if, when, why, or what supernatural-to-natural messages there are. Therefore, miracles (supernatural acts on the natural) either don't happen or if they do, we have no possible way of making sense of the event.

Therefore, since all we have access to is the material, then a belief in God will only raise more questions than it can ever possibly answer. Furthermore, such superstition will only serve to cloud ultimate, truthful discovery.