According to Osho, the 'good qualities' credited to marriage are largely ironic: it teaches regularity, frugality, temperance, and forbearance only because the institution creates the very frictions that demand them. His joke about the centenarian shows any benefit is accidental—like getting exercise by walking away from fights—implying that institutional marriage seldom yields intrinsic virtues; at best, it provokes coping strategies.
Marriage’s ‘virtues’ show up mostly because marriage creates fights—so the real benefit might just be taking walks to cool off.