Creation Moment 1/10/2013 - Creation & Marriage

Christ refered to the first marriage (which takes place in the creation story) as literal....so why do some so-called Christians waste time questioning the rest of the story?

Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.

Genesis 2:24

But from the beginning of the creation God made them male and female. For this cause shall a man leave his father and mother, and cleave to his wife;

Mark 10:6,7