I wish there was a way to make natural painkillers more available and at the same time prevent abuse and the problems that causes.

I think one of the reasons for controlling substances is to raise the price, inspire derivatives that are more powerful, more addictive, and easier to transport, and make them available in the black market. That provides an income for the evil entities of the world and a dependent / addicted population who will do anything to support their expensive habit - perpetuating distribution chains, crime, and theft.