God exists because you believe.
People believe, because God exists and lets them believe.
Most people are born into religions. They 'believe' because of social pressures.
Nothing to do with reality or what is true and what is not.
People who actually care about the truth, discover that religion is a bunch of nonsense and become atheists.
I believe in God and there's no social pressure that is being put to me.
I just know the truth that there's a powerful God.