Welcome.
I, too, am glad that you are distancing yourself from fundamentalist drivel, but I would point out that not all religions or religious people take such a literal stance toward their religious teachings, nor do all religious people look to religion for factual truth, which is better suited to history or science.
For instance, two theologians I know of who are popular among Unitarian Universalists who identify as Christian (as well as other liberal Christians) are Bishop John Shelby Spong and the theologian, Marcus Borg. Karen Armstrong also has much in common with them. Your criticisms cannot apply to their theology or religion, which do not make fundamentalist claims. Fundamentalist Christianity is, indeed, a modern variation on Christianity.
Also, not all God-concepts can be said to "exist," nor are they supposed to. The sense of the divine I relate to is an internal experience, much like a taste or a smell, not a being.
And while you all religion as being inferior to science, it is again important to point out that not all religious people look to their religions to make truth claims or discover facts. Much of religion is metaphorical, and not only in fringe religion, but in the major world traditions, as well. Mythology is not supposed to be literal. It is the voice of an ancient people, and their story.
Again, welcome to the forums. : )