If you regard preventing the destruction of society as a moral issue, then yeah.
In our nation's history, the word "Freedom" was never intended to comprehend drug abuse indulgence.
The drug war has only destabilized Mexico, the US border, and militarized law enforcement. Your building yourself a cage to sit in, under the pretense of preventing the destruction of society. Legalize it all and let the market of ideas and capabilities straighten things out.
"The world needs ditch diggers too!"
The same arguments you are making now about weed were made by the Abolitionists during Prohibition. If booze is legalized, the country will wither, the spines will warp, and the allies will lose the war!
Those who refuse to learn from history, etc.