As you know I'm not a Christian, but I've studied religion intensely and believe that the specific stories told in religious texts are less important than the feelings of comfort and spirituality that come with religion. Religion after all came about as a way for our ancestors to understand the unknowns in their world and to bring them a sense of comfort and community. The same stories have been told since the dawn of civilization and are echoed throughout all religions in some way even though the characters and specifics of the story's vary by culture.

You're not insane for your beliefs, it can become dangerous if you start suffering delusions or start to feel you should do something that would harm yourself or others in the name of your religion... but you should embrace the comfort you feel from being a Christian. To me, that is one of the big points of religion.