It's such a strange bimodal distribution, among people I know - there are those who take preposterous numbers of painkillers on a semi-regular basis, and those who won't take an OTC painkiller except under duress when they're on the edge of blacking out from the pain.
I do think a great many people either overprescribe or are overly dependent on painkillers, opioid and otherwise, but there's also many different kinds of pain. I have a fairly high pain tolerance for most things, but certain kinds of acute pain, mouth pain or the warning pain of a migraine immediately disrupt my ability to concentrate usefully, which can be problematic when you need to concentrate to resolve the source of the pain.
There's also a weird thing where a good number of people I've known have regularly taken well in excess of the maximum safe dosage (even for Rx) of painkillers for days or weeks every month, and not think this is something they should bring up with their doctor. If this were "I talked to the doctor and made this choice based on X information," I wouldn't be as surprised, but it just never crossed their minds that it was abnormal to have crippling pain on a recurring basis.
In the US, I recently had two teeth removed that had horrendous infections (the swelling was tremendous); after the surgery, I asked them about painkillers, and they told me I wouldn't need them, just take ibuprofen if the pain gets bad and it'll go away in a day or so. I was skeptical but listened, and much to my surprise, the pain did almost magically vanish after I went to sleep that night.
AIUI the reason they still tried opiate painkillers is that there aren't really many non-opioid alternatives available other than the OTC stuff - and the effectiveness of both types varies wildly by person, but since the distribution is wider for the opioids, on average you're more likely to get pain relief from it. (My brother, for example, gets almost no benefit from any non-IV opioid painkiller, whereas if I take a single hydrocodone I'm both pain-free and borderline asleep.)
It'd be nice if we could find ways of relieving crippling pain without risk of physiological addiction, but so far, I don't think I've seen much compelling research toward that.