Man was created with free choice. This is our fundamental nature. Therefore what goes against that nature is contrary to the truth of who man is or is meant to be.
The vast majority of human action reflects the thoughts, beliefs, and feelings of the actor. There have always been and there will always be those whose actions are erratic or divorced from reality. The actions of this small minority are best ascribed to pathology not philosophy. For the rest of us we think therefore we are. What we think about today we act upon tomorrow.