Religious faith of the existence of god:
There are many arguments that can be raised for or against the existence of god. As per the western traditions the existence of god began with Aristotle and Plato (comes under natural philosophy).
Many believes that the existence of a benevolent god is essential logically for the evidence of senses to be meaningful.
Atheists believes that the facts proving existence of god are insufficient or outweighed by arguments against it. Religion like Buddhism are least concerned about existence of god and Jainism rejects the possibility of a creator deity.