Some say Christianity is just a crutch. But let's turn the question on its edge for a moment. Is atheism an emotional crutch, wishful thinking? The ax cuts both ways. Perhaps atheists are rejecting God because they've had a bad relationship with their father. Instead of inventing God, have atheists invented non-God? Have they invented atheism to escape some of the frightening implications of God's existence? Think about it.
According to "matter-ism," matter is all that exists. The only things that are real are physical things in motion governed by natural law. That story starts, "In the beginning were the particles," or, as one famous person put it, "The cosmos is all that is, or ever was, or ever will be." No God. No souls. No Heaven or Hell. No miracles. No transcendent morality. Just molecules in motion following the patterns of natural law. This is the story that most atheists, most "skeptics," most humanists, and most Marxists believe is true.
Some people suggest that a worldview is like a set of glasses that color the way you see the world around you. A Christian interprets the world one way, and an atheist interprets the same world a completely different way since he's looking through different worldview "glasses."