I do not disagree with this. The conduct of western media, the school system, the Church and peer pressure brings us to question the concept of free will. There is no evidence that free will exists.
People do good and bad not because of God or the Devil, they do it because of complex biological/Genetic and societal/family matters.
Once you accept that the devil exists you block yourself from all that research that gives the real explanation behind human behaviour.
When you accept that Earthquakes are caused by sin and sodomy, you block yourself from the real explanations behind the actual geology.
When you say the Earth was created by a bearded man in the sky, you block yourself from the true explanations behind it and all the discoveries and inventions we can make by better understanding astrophysics.
This is my issue with people who promote superstition and pseudo-science, you provide no real answers, just assertions and then you start bashing people who are actually spending their entire lives, sacrificing their love lives, time with their kids so they can make real discoveries to make life easy for people like you to have computers that you can use to bash them back.