According to 2013 study in Psychology of Religion and Spirituality anger at God is tied to entitlement. The study, titled I Deserve Better and God Knows It! Psychological Entitlement as a Robust Predictor of Anger at God, was conducted by Dr. Joshua Grubbs and colleagues at Case Western Reserve University and the University of Georgia.
They argue that people get angry at God in response to negative events like natural disasters, diseases, and deaths of loved ones. While these experiences differ in important ways, they have a common trigger. According to Dr. Grubbs and colleagues, “Perceptions of divine injustice are often associated with anger at God, as are perceptions of being wronged or unfairly victimized by a deity.” Such anger is not unimportant as it is associated with depression, anxiety, and poor physical health.
They predicted that anger at God would be tied to psychological entitlement, which they defined as “the belief that one deserves or is entitled to more than other people.” In fact, that is exactly what they found with anger at God being associated with psychological entitlement. As for why, they write that “entitled individuals carry with them an attitude of deservingness. This predisposes them to greater perceptions of being wronged when they are denied those things they think that they deserve.”
For other research on anger at God, see Anger at God.
By Ryan C. Martin