According to Osho, Buddha hammers on “life is suffering” to jolt our numb, distracted minds into seeing the truth of our present way of living—rooted in attachment and illusion—so we’ll seek a different way. It’s a compassionate diagnosis, not pessimism: by recognizing suffering in birth, youth, love, success, we become motivated to turn inward and discover bliss beyond it.
He keeps saying it loudly to wake us up from clinging, so we look for the path to real happiness.