Long term use of most substances ALWAYS lead to problems and even the short term there are bad trips, brain zaps that alcohol dont bring. Also even for stuff that do not lead to physical cravings such as mdma, i have seen soo many people falling into an addiction. Its not a game.
Alchol wont be banned ever, but i think is a retarded debate to say "we should decriminalize other stuff be cause alcohl is bad". This is the worse reason possible.
Im quite happy drugs are banned and not mainstream so that my children will stay away from them and maybe try later when they feel more mature.
That doesnt mean i support the american war on drugs or jailing people for 3g of cannabis.. but the decriminalization of weed is stupid to considering two of my friends who have an impaired short term memory after 1 - 2 years periods of abuse.