The founding father of the modern Big Bang theory was catholic priest Lemaitre, who favored it over other theories of how the universe came to be: to reconcile physics with creationism.

The Big Bang theory became widely accepted amongst physicists, despite very clearly contradicting several known laws of physics (requires "singularity" mental gymnastics) and failing to explain how space and time came to be.

How is the belief in the Big Bang different from religious belief, in lack of a better alternative?