Ha, ha, no it wasn't. It was started by Republicans to get people angry at the hippies and black people. Read this: http://www.nydailynews.com/news/politics/nixon-aide-war-drug...
The salient quote is: "“We knew we couldn’t make it illegal to be either against the war or black, but by getting the public to associate the hippies with marijuana and blacks with heroin, and then criminalizing both heavily, we could disrupt those communities. We could arrest their leaders, raid their homes, break up their meetings, and vilify them night after night on the evening news. Did we know we were lying about the drugs? Of course we did.”
A true "war on drugs" would seek to increase access to rehabilitation and counselors, while identifying and working to reduce the causes of addiction. Any time a lawmakers seeks to make something punishable by jail time, he is seeking to hurt someone he disagrees with. (There are obvious exceptions, like murder, theft, etc).
When lawmakers seek to punish someone, they aren't doing it because they relish the suffering of the other person, but because they hope that person's pain will dissuade others from committing those same crimes.
Unfortunately this belief is completely unfounded in reality. I really wish this were the case, but we have mountains of evidence on how to help people fight addiction, poverty, get out of the criminal cycle, etc. And that's all ignored in favor of punishment.
Obviously murder is among the greatest tragedies, but often it's a product of circumstance. Theft especially so
The government's much greater resources and number of full-time professionals at its disposal is one reason to think they might be able to do things an addict's friend could not.
Doubtful. It's not that they don't want to help them, but more that there's simply not much government can do.
Consider drug addicts. One of my good friends died of an overdose last year, and all of his friends including myself had tried for years to get him to quit. No luck. If someone's closest friends can't help them, what makes us think the government will be anymore effective?
In fact the government has tried through the "war on drugs". You can disagree with the means of the war, but the intent was to help society and the people most vulnerable in society by eliminating drugs through force.