The culture we live in today is one of seeking to effect tolerance toward the various religions: even when people, who claim to understand scripture, perform unimaginable crimes. Small wonder then, people who, seek peace of mind and true love, will turn to philosophy or science (or both) - when they feel disillusioned by doctrines within religion.
Knowledge of Good = Truth
Knowledge of Evil = Lies
Mixture of Lies and Truth = Delusion
Many of the world religions share the same themes - such as, 'love one another,' or, 'do unto others as you would have others do unto you,' but doubters cast a weary eye on the wisdom available in ancient writing - because people often attribute the problems they see, in the world, to religion.
The problem is not religion but, rather, false doctrines that establish a delusional belief system.