It is profitable don't you see? Legalize drugs, take the money out of it and the crime either goes away completely or close to it. No more money to finance well armed gangs, no more shoot outs on the border, drugs cause those shoot outs, drugs finance the gangs such as MS13.
Claiming the high ground is simply BS. Don't want to do drugs? Don't do them, I don't. The only ones who are damaged with legal drugs are the ones taking them, no one else. The people who are damaged when drugs are illegal are too numerous to count, but of course moralistic people can't be concerned about the many victims caused by the war on drugs. They have to make sure everyone lives just the way they want them to.
People who think drugs should be illegal are actually liberals, because they want to control what others do.
I am not a drug user, never have been, I am not a libertarian, never have been. I am a realist and a person who learns from history and I use common sense and not a moralistic desire to control other people.
I should think that what is happening in our country today would be clear enough evidence that what happens to society as a whole IS a great concern for individual liberties.