Where it comes to pain, everybody is different in terms of how the pain manifests itself (how it feels), how it is perceived by the individual (their threshold for pain), and how they respond to medicines that are supposed to relieve the pain. Some people for example, will swear by Tylenol, while others find it useless and prefer Ibuprofen intstead.
Many people find the high from mj to be relaxing. Isn't this testimony to its pain reducing qualities?
While it may do little to relieve the pain of a severed limb, for example, mj may be helpful for the "little aches and pains of life" that people feel as they age, or for the chronic or intermittent pain that comes in the aftermath serious injury.
Several advantages to the use of mj as a pain reliever exist, including its non-addictive properties (at least physically), and the fact that the LD-50 value is off the charts (it is literally impossible to die from overdose of mj). The main disadvantage of mj is that ingestion normally occurs via smoking, so anytime you are inhaling particulates and the by-products of combustion there is an additional health risk. Could it really be much worse than simply living and breathing in LA?
I think there are enough reasons to justify legalization of pot as a no-harm drug, which makes it unnecessary in my mind to sell it as a wonder drug is all. To many, it seems silly because proponents think it solves too many ailments to be real. It's like "Doc Wonder's Miracle Elixir" Good for whatever ails ya!
It makes people who feel bad feel good. OK... It makes people want to eat that didn't want to eat before, and helps nauseous people keep the food down. But the better argument to me where pot is concerned is the no harm argument.