Legalism, the rigid adherence to rules over grace, has eroded U.S. churches by fostering judgment, division, and spiritual burnout. It shifts focus from Christ's love to moral checklists, alienating seekers and stifling authentic faith. Churches become cold, exclusive clubs, driving away those yearning for genuine connection with God, while members exhaust themselves chasing unattainable perfection. Grace, the heart of Christianity, is suffocated, leaving communities fractured and spiritually hollow.