Nether should be "legal." By the way Prohibition did work. America in the late 18th and early 19th was heavily into alcoholic beverages. Children would carry around "toddies" of rum nursing them the entire day. Drunkenness was quite common. The temperance movement stared in the 1840's-(the longest running play in American history was "The Drunkard.")-and it worked, yes Carrie Nation had a beneficial effect. America sobered up.
I noticed the bait-and-switch there, from Prohibition - which began in 1922 - to Carrie Nation - who died in 1911. I don't doubt that social pressure and public awareness sobered up America; the same approach should be taken with other intoxicants.
Now as to the silly remark that we cannot allow alcohol but suppress drugs has a multitude of hidden premises. Besides we discriminate in the application of criminal law all the time; i.e. Petty Theft is not treated the same as killing while lying in wait, killing by torture.
Punishing a more serious crime harder than a less serious one makes perfect sense ... making one intoxicating substance legal while a less addictive intoxicating substance (that is, pot) is illegal is the opposite and nonsensical.
Evidence is accumulating that pot is NOT less harmless. It is addictive and does lead to stronger drug abuse. There is social harm in drug use both for the user and the poor Oregon victim of the pot heads driving. Once again one commands the druggie one does not “debate” with them.