Yes.
Because I don't know your back story this advice is directed at pain sufferers in general.
Opiates should be IN FACT about the last thing you try for pain with the exception of emergency pain associated with sudden traumatic accidents, short term pain like somebody recovering from a surgery, or to prepare for surgery itself.
Especially the fact that your pain is chronic, the very first thing this tells me is that opiates are a MISERABLE choice for this. Endorphins (read: boring sweaty exercise) are the go to for this, because it's the chemical (or rather, the entire complex class of chemicals) for which the rest of your complex brain metabolism is meant to work. Nothing will ever work better on your brain.
If exercise proves inadequate, opiates aren't even your next choice, assuming chronic pain. Then your next one will be something like acupuncture, reiki, diet, sleep, homoepeathy, Chinese medicine, herbal medicine. Which will take years to explore.
Even having exhausted these possibilities, which have been documented to rival opiates for pain management in terms of efficacy, your next stop still won't be opiates...next it's the safer drugs like caffeine, asperin.
In fact opiates only really becomes interesting in the case of people, again assuming chronic pain, that are in so much pain that they are having trouble sleeping.
Because otherwise desensitising you to the pain is actually counterproductive. It is focus that provides relief from pain. Numbness is a hackish way to go about it.
This is for people with war injuries, farm injuries, sever cancers, ....things that most of us won't get except near the end of our life.
But even that doesn't make sense, because after a few nights without sleep you go insane. And insanity generally blocks pain.
So no, unless you're a war veteran. Or unless your wife was in the same car accident as your best friend and your dog. Or unless you just got stabbed in the eye last night I'm afraid opiates are actually a terrible choice for long term pain management. Having gone the insanity route myself, I'd rather go through that again if I get another injury than deal with the actual side effects of opiate use which you list as anxiety and yes...pain, to which I'll add constipation, itchy skin and societal judgement? Choose life.