The "downsides" are still much better than those of alcoholism. I just hope (and believe this may happen this way) more people are going to give up booze and drugs and switch to the weed. As soon as I've tried (for a number of times, the first experiences may be confusing and even scary) the weed I've forgotten vodka as a nightmare, now I just smoke some weed about 2 evenings a month in average.

I still highly recommend to stay away from the weed if it's not legal at your location however - messing with criminals and cops can really ruin your life. If it's legal for medical use only - don't hesitate to ask the doctor (but don't be pushy or play an expert, doctors hate this), some progressive doctors at some locations may actually prescribe it for addictions, depressions and eating disorders treatment, not only for cancer/aids.