According to Osho, when people keep living in the old rut, misery becomes synonymous with life: they get habituated, fear change, and cling to familiar pains as an identity. Even offered freedom, they hesitate, preferring the known to the unknown emptiness. They rationalize suffering (karma, fate, God) and stay in a vicious circle, never discovering that bliss flowers only in inner emptiness.
Like getting used to a long headache, people stick with familiar pain, make excuses for it, and miss the happiness that comes from bravely letting go into inner emptiness.