RM is just such a vile individual in my opinion. Despite his false face presented to the world as this loving Christian husband and father, in almost every part of his life, he has made a mockery of those values.
He has disrespected his marriage with his sexual infidelities and obsessions. He has disrespected his employer, by using time he is being paid TO WORK...to indulge his sexual fantasies. In today's economy, how many people would love to have a job like the one he made a mockery of! He speaks of kissing his child for fear that he might die in a car wreck, but is too lazy to change out the car seat to make the possibility of that happening less likely.
Even if we just look at this man apart from this crime, what we see is a study in deliberate deception. He wants to be WHAT he wants...he imposes no morals or boundaries on himself. He doesn't put forth any personal effort to be a better husband, employee, or Dad. All his effort just goes to fool as many people as he can. To cover his tracks. To have everything BOTH ways.
This crime fits into that personality with complete perfection.