The Saddest of All Prisons

In the society of today, guilt does not have as much of a significant meaning as it did in the past. Before, in the past, specifically during periods where religion dominated the human psyche so much people killed each other over it, that morals and guilt, sin, etc, were all of heavy values to the human mind.
Firstly, religion was established to put forth morals in the untrained human so that they can develop basic principals to live by, pretty much a rulebook that's been embellished to send out these morals in subliminal messages through the stories.
Now, we look back and think of how much religious weight had on our thoughts. It ruled a major portion, while today, our religious followers are in decline. People do not follow strict church attendance anymore, and religion has fallen out of its seat of power on the human.
Now, we put the pieces together and think, people were taught to atone their wrongdoings, and rid themselves of the guilt. If these teachings are decreasing at a rapid rate, then we do not hold these emotions to our heart as much as we did in the past.
Even though we still might carry guilt upon our chests, it does not have as much of an impact upon ourselves as it did in the past.