I assume you test for nicotine and alcohol use then, correct? If you aren't 'responsible' enough to quit smoking - since you know it's bad for your health - why should I hire you?
Drug tests are counterproductive, because not only do they not dissuade drug use (empirically), but they push drug users towards drugs like cocaine, which are detectable in drug tests for only two days, instead of drugs like marijuana, which are detectable for several weeks.
The only drug you can really test for effectively is marijuana, and I frankly couldn't care less whether an employee uses marijuana - medicinal or recreational - in his free time, just the same way I don't care whether he drinks alcohol or smokes cigarettes.
Finally, it's nobody's business what an employee of mine chooses to do after work so long as it doesn't impact his work performance. If it does, that's reason enough to fire him right then and there, without any need for a drug test.
Nicotine and alcohol are legal. An employee of, say, the federal government should not be partaking in illegal drugs. If a person with a security clearance is regularly doing cocaine, at least one person (his source) knows. He is now vulnerable to blackmail. This is why we have random drug tests--I've never been called for one, but I will not consume illegal drugs because I could well be called tomorrow.
I'm also impressed by your assertion that employees will think, "Shit, I can't smoke weed, guess I better start doing coke!" It's like the whole "gateway drugs" thing, except he skips straight to the hard stuff because the gateway isn't available to him.
some random tech company (which, let's face it, is where the majority of people reading this will be applying to) is not the federal government. there should be no legal burden on, say, amd to hire only people who do not use "illegal" drugs.
Drug tests are counterproductive, because not only do they not dissuade drug use (empirically), but they push drug users towards drugs like cocaine, which are detectable in drug tests for only two days, instead of drugs like marijuana, which are detectable for several weeks.
The only drug you can really test for effectively is marijuana, and I frankly couldn't care less whether an employee uses marijuana - medicinal or recreational - in his free time, just the same way I don't care whether he drinks alcohol or smokes cigarettes.
Finally, it's nobody's business what an employee of mine chooses to do after work so long as it doesn't impact his work performance. If it does, that's reason enough to fire him right then and there, without any need for a drug test.