On the alcohol-marijuana issue.
Don't worry about being consistent.
Just worry about being right.
Justice must be consistent, as should the laws guiding justice. Is it just to arrest someone, throw them in jail, and revoke many of their rights for the mere possession of marijuana? Yet if someone possesses alcohol it is legal, regardless of the fact that they are more likely to cause harm than the users of pot.
Inconsistency oft shows hypocrisy. I have yet to see a case where hypocrisy was right. It is pretty hypocritical in my view that the drug that causes far more problems is legal and the one that causes less is not. Having seen that prohibition of both substances creates new problems without really solving the old ones(even making them worse in some cases) I can only say that it would be right to legalize marijuana in order to alleviate the problems of prohibition, since the inherent problems of both drugs are really can't be solved.
Let us be consistent and ban alcohol to.