No conclusive evidence for the existence of God can be found externally through science . . . to date.
Therefore, all belief, true or not, is a product of the human mind . . . a perceptive deduction.
The deduction is not based on evidence and doesn't need to be, because it is the default position taken up by the human mind. Where a high level of intellectual complexity exists . . . the percieved threats to existence become more manifold through the ability to conceptualise (what if?)
Similarly, mitigating these threats becomes more intellectually and conceptually complex. But the comfort from belief is likely a complex survival mechanism. The brain seeks to account for all threats to existence . . . death being the ultimate threat. Belief gives relief in the short term by allowing us to "sleep at night", and in the long term by dealing with a percieved future threat . . . both outcomes being essential to health and survival.
That's why "leaps of faith" are often made so easily . . . it's just slipping gently into default. For that reason, it will also remain for some time yet.
Dispensing with belief is not natural . . . and those holding to such beliefs will probably live longer. Living without belief is uncomfortable and stressful . . . anybody who says otherwise is an exception or dishonest.
The sciences that will challenge belief most vigorously in future are not cosmology, geology, archaeology etc. They are neurology and psychology.