what do you guys think of smoking weed?
Smoking anything in general is a poor idea. The amount of damage that tar from either cannabis or tobacco does - or can do - to the body is immense. Cannabis presents another potential danger as there is some evidence to show that it can lead to adverse reactions in those individuals predisposed to schizophrenia and other underlying (and overt) psychological conditions.
As an aside - smoking anything is pretty gross in my opinion. I really can't see the appeal.
I see the difference between alcohol consumption and cannabis consumption as being one of a biological nature. The body can adapt to a degree to a fairly large amount of alcohol consumed over time, in that the liver cells develop more Smooth Endoplasmic Reticuli so as to metabolise the ethanol more quickly. However in the case of smoking cannabis (or anything, really). The residue that is inhaled as smoke - which accumulates as tar - cannot be managed effectively by the body and so presents a greater threat.