No offence Taken Momo, I am probably in agreement with you to a point, I believe man attributes way too much credit to the devil, men have long used God and Satan as scapegoats for their own shortcomings. If you are of the mindset that these characters are constructs of man, in the scenario in which that is the case, you would be entirely correct.
How do you figure that?
In simplest terms. The Earth will die without intervention, through one of any number cataclysmic events or a slow extinction. the bible God however implies that he is able to preserve the earth and it's inhabitants indefinitely, whether that is possible or not, without intervention, we are doomed