What all that, how can you defend opiates? Opinion of society is irrelevant here, they are absolute scourge if used enough, and nobody is immune.
i do argue that in the correct harness, opiates could be distributed to minimize unnecessary suffering at least somewhat - not 24/7, because literally any drug will result in tolerance (and debilitating physical side effects, something opiates lack) at that point. our current system is unsatisfactory - people are not taught how to take drugs correctly, and people exist in a system that naturally causes dopamine seeking reward systems to malfunction. while some are born psychologically weak, inherently leading to addiction susceptibility, society is expressly designed to produce such weakness in order to maintain the status quo. of course such an environment is not positively conducive to the dopamine flooding effects of opiates. i dont blame opiates for the system in which they exist.
regarding personality cracks, i still refer to rat park for the most part, saving brain resets such as ibogaine for extreme cases - our addiction inducing society (as a whole, not merely the opinions wherein) does not imply impossibility of rewiring addictions. regardless, some people think cracks are beautiful (ref. kintsugi).
do you argue that everyone should be instead placed on nsaids that destroy the stomach and liver, killing them earlier and objectively adding pain prior? is the current trajectory (that is, entirely depriving the suffering of effective relief, regardless as to their age bracket) for the best?
Here is a site you can use too see how most pharmaco therapy is lacking.
https://pain-calculator.com/calculators/osteoarthritis-pain/
Very few painkillers that are not blood thinners. Paracetamol and canabinoids are a couple of rare exceptions.
My uncle broke his hip in his old age. He died shortly after because of the bleeding induced by painkillers.