@spendius,
spendi, Even before I finished reading your first paragraph, I knew what followed were rationalizations about religion that is not supported by history.
In the first place, humans are not rational animals. When most humans can believe in something that has never proven to exist is not only irrational, but stupid.
That's not to say humans do not require the belief in gods, because there are plenty of evidence for that.
The mysteries of life are many, including how life forms were first born on this planet. Whether that question will ever be answered is not a panacea for belief in gods. Most humans require some form of real evidence before we believe in something/anything.
The closest we ever come to rational thinking comes from science; it must show proof that something is true.
Nobody has ever proven any of their god exists; it's a pipe dream with no redeeming value.