well put..Not the case. I know plenty of people who are completely productive until they start smoking, and then they become useless. It isn't a stereotype, it's a fact. Being stoned out of your mind 24/7 is not going to help you become a productive member of society, no matter how much you want to believe it.
And you can bet your ass if it is ever legalized, it will see heavy taxation just like alcohol and tobacco.
It's everyone's place to judge when society in general has to clean up the mess and pay the medical bills and jail time for addicts, be it from tobacco, alcohol, heroin, meth etc. You should be especially interested living in the US with sweeping new health reforms about to take place. It's expensive to pay for lung cancer patients etc.
plus, considering the whole infrastructure surrounding drugs on both sides..there's too much time, money and people involved for it to ever be legalized.
as for the health care reform..that's a new thread. when a illegal alien junkie can walk into a hospital and get free care and me (a hard working US citizen who pays all his bills) has to pay up the ass...that's about time for me to exercise my rights using the 2nd amendment.