Exactly!
It all boils down to the environment you live in which affects the way you grow up. A kid with the purest heart can turn into a criminal due to the influence of people around him.
We tend to love being influence in an effort to become normal or follow whatever everyone around us is doing. Because of that we are more inviting to outside influence. Also, outside influence can be a deciding factor of whether you turn out to be a criminal or not.
Same as the example of the guy above, he had genes within him of a psychopath, but due to the love and care he received he didn't travel down that path.
I believe there's nothing written in this life and I don't believe that people are born evil althoughbut all of us have the gene of evil within us. The environment in which a person lives is fundamental to whether or not this evil emerges. Thanks for your comments, as always ;)