So why do people keep believing that god is real?
People are more emotional, than rational. They want ready-made answers for their questions and concerns. They don't want to think too hard about it. They want to know the origin of life without waiting for the research. They want to know what happens, if anything, after death, so they can somehow be prepared for it. They want control over their own lives. They want control over others. They want help in desperation. They want to make a safer, better world. They want to live forever.
A God, seems like he could solve all those problems. Hence the desire to believe.
Indoctrination molds the psyche, making the concept seem to be innate.
Inordinate elevation of the importance of faith, numbs their natural skepticism, and renders them more amenable to self deception.
Then the convoluted pseudo-reasoning of apologists, reinforces a believer's delusion, making it difficult for most people to distinguish between a sound conclusion, and a rationalized defense of their preconceptions.
And of course, in our culture, everybody believes it, so it must be true.
Finally, demonizing the very thought, that what you've been taught is in error, frightens many people away, either consciously or subconsciously.