Here’s an interesting thought experiment, especially for Christians. Imagine, for a moment, what the world would be like if Christianity were a myth. How would it be different?
People would not suddenly become omniscient, would they? Of course not. Why would God’s failure to exist suddenly improve our mental abilities? A world in which God was a myth would still be a world where people don’t fully understand the world around them. That means believers would still have plenty of opportunities to superstitiously ascribe things to God, and to defend their faith by pointing to things and saying, “You can’t explain that!” Even if God never existed, we could still have creationists and philosophers building detailed apologetics out of what we don’t know.
Coincidences would not stop happening, would they? Of course not. The world is a complex place, with complex and subtle interactions. We can’t trace back every chain of cause and effect, even for relatively simple processes. To follow all the complex social, economic, and physical factors that influence our lives would be humanly impossible. We can’t predict our own futures with 100% accuracy, and consequently we will not uncommonly encounter things we didn’t expect. There would still be plenty of room for superstitious people to take those unexpected outcomes and call them “miracles.”
Could people pray to God if God were not real? Of course! Even from a Christian perspective, people pray to false gods all the time, and always have. If Christianity were just another myth, that wouldn’t stop Christians from praying for things. And since they can’t predict their own futures with 100% accuracy, some of those prayers will turn out just the way they had hoped, allowing them to still keep calling them “answers” even without God. In fact, if they don’t turn out as hoped, believers can still invoke the “God works in mysterious ways,” and “were your motives pure?” and “thou shalt not test the Lord” excuses, so even the failures can continue to be “God’s will.”
Could we have a Gospel story with a resurrection and other miracles? Sure: look at voodoo, and Hindu fakirs, and snake oil salesmen. People love to believe they’ve seen genuine evidence of the supernatural and/or extraordinary. Look at Bigfoot and UFO’s and the Loch Ness Monster. Look at all the people today who convince themselves that they’ve “seen” visions (when there was nothing there physically to see) and “heard” God speaking (when there was no audible sound). Look at people who believe, in all sincerity, that Jesus has entered into their hearts. All you need for a “resurrection” story is for early believers to be like modern believers: willing to accept “spiritual” experiences as being genuine truth, and not entirely averse to “improving” the story as it gets passed along.
In short, if you look at what kind of world we would expect to find if Christianity were a myth, you get a world that’s identical to the world we happen to have. You can’t do that with the premise of a loving, omnipotent, Christian-style deity. Think of all the things a genuinely real and genuinely loving Heavenly Father would do, by His own initiative. Christian apologetics is filled with excuses for why He does not do them. But the atheist hypothesis doesn’t need to make excuses, because the real world is already consistent with what we would expect to find if Christianity were a myth.