During the reign of Imam Ali (AS), the majority’s perspective and approach towards religion and worldly matters had significantly diverged from that of Prophet Muhammad’s (SAW) time. Imam Ali (AS) strived to steer society back to the traditions of the Prophet’s era through his governmental actions and reforms. However, the deeply ingrained pre-Islamic traditions in people’s beliefs thwarted his achievement of Islamic and humanitarian objectives. The present research, employing a descriptive-analytical method, seeks to answer the question of how the Islamic society reverted to pre-Islamic traditions after the Prophet, and the impact this had on the wars during Imam Ali’s (AS) reign. The response is that pre-Islamic traditions, which remained in Islamic society after the Prophet’s era, caused a regression to pre-Islamic times. This regression, particularly during the reign of the three Caliphs, was marked by a significant revival of retrogressional standards. During Imam Ali’s (AS) reign, these traditions caused the perspective and approach of the majority towards religion and worldly matters to be out of sync with his philosophy and motivations. This difference in perspective prevented Imam Ali (AS) from achieving his Islamic and humanitarian goals.