I would say that most people in today's world take religion with a grain of salt. That includes Muslims and non-Muslims. I sincerely hope this is the case, especially with the Bible's Old Testament. 
"If any man take a wife, and go in unto her, and hate her ... and say, I took this woman, and when I came to her, I found her not a maid: Then shall the father of the damsel, and her mother, take and bring forth the tokens of the damsel's virginity unto the elders of the city in the gate: And the damsel's father shall say ... these are the tokens of my daughter's virginity. And they shall spread the cloth before the elders of the city. ... But if this thing be true, and the tokens of virginity be not found for the damsel: Then they shall bring out the damsel to the door of her father's house, and the men of her city shall stone her with stones that she die. Deuteronomy 22:13-21"
If Christians took this literally, chances are that most of us would not exist!