The problem I have with it is that it lowers the bodies natural ways of dealing with pain. You become more reliant on it, rather than just handling the pain yourself.
People in pain tense their muscles, they walk in a different way, they stop exercising, they stop moving around so much.
All of these things help keep pain going on longer.
For long term pain with no worrying cause you should carefully take pain killers and keep moving. Things like lower back pain (which can have serious causes, so get it checked) get much worse if you stop exercising, but get better if you get appropriate exercise.
You are describing the phenomenon of chemical dependence. Can you point to a trial, cohort study, or even case series showing evidence that acetaminophen is a compound on which people develop dependence?
Being in pain when there is a simple, cheap, safe, effective medication is a bad way to live.