He could use them for so much more than any of us could. We'd just use them to kill pain; he could use them for genuine enjoyment.
When the world goes off sideways even a stable person will lose their balance. No pill will fix an imbalance in the world, and if the imbalance we feel inside comes from the outside it can only be prevented from entering, which a pill can only do by numbing senses and sensitivity. If the imbalance is truly from within then the only way to balance it is from within also.