Agile does not take reality into account. Estimates become deadlines and turn into death marches. The watering hole is poisoned and culture dies a painful death

Agile does not take reality into account. Estimates become deadlines and turn into death marches. The watering hole is poisoned and culture dies a painful death. That is because customers and business owners footing the bill don't do Agile. Everyone is excited during sprint#1; by sprint#10 the finger pointing and scapegoating begins