thc is less unhealthy than alcohol and it can clearly be used as a form of painkiller(i know people who use it for the very same reason), wich was prolly the case for the one in the article.
thc and tobacco (aside from passive smoking) dont affect society nearly as much as heavier druguse and alcohol. crimewise, accidents where people are drunk etc. id like to think of coffee, tobacco, thc and alcohol in the same folder (where alcohol is worst).
and stuz, yea, ofcourse its not healthy, neither is a bigmac. but on the smoking part, sure you take deeper blows, but on the other hand you dont smoke 30 joints a day as smokers smoke cigarettes (some even more).
having alcohol legal and weed illegal is hypocrisy. allow or forbid both.
Agreed THC has its uses as a painkiller, but the effects of cannabis use have, for example, shown to be at least as dangerous in vehicular accidents as alcohol due to its effect on perception and reactions. You seem to be using the positive effects of THC to argue in favour of cannabis/marijuana as a whole, which is a bit like, I'd suggest, arguing for the benefits of having bare live electric wires lying around the house because electricity is good for powering light bulbs.
Part of me can see benefits in legalisation (at least decriminalisation) in terms of being able to tax purchase and reap revenue, but given that at present it is illegal the prices of this addictive drug are controlled outwith the state there could be an argument that addicts are more likely to turn to crime to fund their addiction than they presently are with (legal) drugs such as alcohol, and its prohibition actually restricts the number of addicts therefore reducing the risk of the corollary criminality arising.
In short, while I agree that this case is an absolute mess it shouldn't be used to confuse "recreational" cannabis use with all the associated health risks with the controlled medical use of extracted THC as a painkiller.