As the OP explained, there are no rational arguments for God (where God is defined as the god of the Abraham religions). As the post below that explains, that is no problem for many people. I think the viewpoint is somewhat like “Yes - we know there is no reason to believe this. But we do! It is our test. The simple fact that we’re willing to spend our life believing something without evidence says something for it.” That could be incorrect.
The problem is - and yes I believe there is an enormous problem - faith. Faith is a problem. Faith is a bane. Faith is an extremely dangerous thing. That is my viewpoint, and I’m going to attempt substantiating it a bit.
I believe that there is a can of soda beside me in spite of the lack of evidence. There is no reason for me to believe there is a soda beside me. I can’t see it, touch it, smell it, or anything else. Now - I realize that God can’t be observed, but I don’t think it matters. When I reach for my soda, or God, it isn’t there. But my soda is not an important thing.
Instead of soda, let’s use medicine in a hospital or weaponry in war. God will give us medicine - and of course there is none. The magic flying donkey will give us weaponry to fight the evil ones! And no weaponry arrives. We would die in a split second if we used faith for important things (not our philosophy). I have faith that X will beat my heart, so I won’t die. I have faith that Y will feed me when there is no food. God will keep me alive. Yahweh will save me. Allah will help us along. It simply doesn’t happen but for very, very few times with coincidences. When a coincidence happens, it is God. When a coincidence doesn’t happen, it’s because God doesn’t want it to happen. It’s very convenient, and it’s called rationalizing observations. Try that in a science book…
I should explain that when I say “faith,” I mean belief without evidence or even in spite of evidence. One could say “but you have faith in science,” and I would simply state that I have seen the evidence. Evidence really is a big, big word for most atheists, and even more so for scientists.
Alright, so we have no evidence for God. We have no logical arguments that work out for God. In fact, we have an argument from Descartes that says we can’t know anything about God[sup]1[/sup].
If it’s bad to believe in things in spite of evidence or without evidence, then why do you do it? You don’t. To spurt of some Dawkins, you don’t believe in Zeus, Allah, Brahman, or any of the thousands upon thousands of other gods out there, many of which closely resemble Jesus. Is that because the Bible says not to or because there simply is no evidence for it? If Zeus popped up, said “Yo, I’m here,” and tossed a lightning bolt, you would believe wouldn’t you? If suddenly the constellation of Orion came out of the sky and said “I’ve been up here for a long time. I’m in charge of the underworld, and my name is Osiris,” then wouldn’t you believe Osiris existed?
Let’s use the Russel Teapot. I’m telling you with firm conviction that there is a teapot floating around the Andromeda galaxy a couple million light years away. Nevermind how it got there! It’s there! It just is! Don’t you believe me? Of course you don’t. You would be believing me in spite of the evidence that we can’t get a teapot that far away, and with lack of evidence of any teapot being there. The true Teapot analogy is only around the sun, or is it Earth?. There is a teapot orbiting the sun. Do you believe me? Probably not. You can’t know for sure if I’m wrong, but without evidence, there really is no reason to believe it. That is my position. I believe that the teapot analogy for God is more like saying that there are 70,000,000,000 moons orbiting the Earth, all big enough to see, but you just can’t see them because they don’t want you to. Oh, and they watch you, and judge you. And you can have a personal relationship with them too! Yay!
I don’t believe that people will believe things without evidence or a good logical argument for them unless they just want to. And then it comes down to why they want to. Is it even safe for them to want to? As I stated above, I don’t believe faith is a safe thing for any society.