Yep....
I get tired of the comparisons to alcohol when in fact marijuana shares more in common with the hard drugs than it does with alcohol. ....marijuana has been shown to have a residual effect on cognitive ability that persists beyond the period of intoxication. ... whereas alcohol is broken down relatively quickly in the human body, THC the main active chemical in marijuana 'is stored' in organs and fatty tissues, allowing it to remain in a user’s body for days or even weeks after consumption.
To equate marijuana use with alcohol consumption is, at best, uninformed and, at worst, actively misleading. Only in the most superficial ways are the two substances alike, and they differ in every way that counts: addictiveness, toxicity, health effects, and risk of intoxication.
Yes, of those who have used alcohol 15% have at some time had a dependency on it, while the corresponding figure for marijuana is 9%.
toxicity,
Yes, while alcohol is known to be toxic, no fatal human dose of THC has been established - in fact, researchers have been unable to kill any lab animal larger than a rat with THC.
health effects,
Yes, no cirrhosis from marijuana. (Nor lung disease from alcohol.)
and risk of intoxication.
For each drug, degree of intoxication increases with amount used; one can get completely obliterated, or only mildly buzzed, with either drug.