I wonder how healthy this actually is. Isn’t pain a signal the brain uses to alert you about a detected problem? Just eliminating the sensation of pain could mean your body would be unable to signal an issue that needs to be resolved.
Complete elimination of pain is probably not a good idea, for sure. But the ability to actively shut off pain once you've acknowledged the problem, or at least numb it down to it not being completely debilitating, could be useful.
However, I can also see how it could be abused to say "ah, it's not that bad" and not have the problem resolved. In my case, it could lead to permanent kidney damage.