We have no idea if a God exists or if He doesn't, we also have no idea if there will be processes which God utilizes which we do not yet understand. Maybe God is made of a strange material which we haven't discovered. If new particle theory challenges all our notions of matter we can no longer be certain exactly what matter is, and we can therefore no longer be certain what non-matter is, therefore assuming God is matter or non-matter, and assuming that we understand all the processes of the Universe is presumptous.

Not YET it doesn't. But we don't know if any such evidence will ever exist, and assuming that it won't makes no sense to me. We can't possibly know right now, if we jump to conclusions about the existence or non-existence of God we are making assumptions.

Most people simply dont want God to exist because they are afraid of the moral consequences of such a thing. In other words, if hell and God were real everyone would freak out.