These are the very same talking points that the DEA uses and they are indeed ideologicaly based and not based in science. "we don't smoke our medicine in this country" - is idological and not scientific.
Pot is 3 times stronger - fear based and stupid argument as smoked marijuana is titrated. It is like saying that we can't drink alcohol because gin is many times stronger than beer.
Gate Way drug - this has been disproven scientificly over and over again - still it is used by a supposedly enlightened administration. Then again, it is possible that marijuana is a gateway to.... the presidency of the United States.
Voluntary admission to treatment facilities - as was mentioned, when you are given a choice of treatment or jail, you take treatment. Beyond that, if indeed we have that rate of voluntary admissions then it can't be all that bad a drug now can it, as people are freely deciding that they need help and going to get it.
As I said, this is all in the DEA talking points used to argue against legalization. In fact the DEA applies political influence (hardly ethical and of questionable constitutionality) to keep marijuana illegal. It is their place to enforce the law, not influence it. They know full well that without mariujuana they woulnd't have much of a place in the world, with marijuana users comprising many times more of the drug using population than all other illegal drugs combined. Busting marijuana is easy, far less dangerous, more media splashy and far far more lucrative than cocaine and heroin busts. Without marijuana, the DEA would have to let huge numbers of their department go and they would forfeit billions in tax dollars and billions more in civil forfeiture.
To those who actually believe that big pharma has a major part to play in the continued illegalization of pot - think again, they can easily get patents and exclusives on one or more components of marijuana, devise some quick and dirty delivery system that jacks up the price and charge top dollar for that "new" medicine. No, pharma is not in fear of pot, they will fall into line within months. Tobacco? I assure you, big nicotine is not in fear of pot either. The two drugs are not interchangeable and their particular "product" is conveniently more addictive than anything but heroin.