I was recently told by doctors that it's a normal result of aging, of course some have it worse than others over time. But stenosis is considered a disease, I think.
I don't know what was with that doc, but I'm taking opoids, trying to avoid surgery, since it is risky. I think it depends on what nerves can be affected.
Sounds to me like you need a second opinion, though.
I'm sorry you're struggling with all that pain. I hope one way or another that it gets better soon.