It is straight forward, this is my point to you.
There is a direct financial impost on the taxpayer for the use of emergency services, hospitals, courts, correctional facilities, increases in both health and insurance premiums and the funding of halfway houses to name but a few.
This does not even go into the indirect costs associated with people taking capacity out of the emergency and life saving services I.E. old betty dies of a heart attack because all the Ambos were busy looking after people getting #shrekt at Stereosonic.
You can argue you're not like that, that drugs can be used safely by some, perhaps they can but when have we ever made the rules for the minority?
The argument regarding smoking and drinking is often brought up, this only really conflates the issue of illicit drug use with more normal activities.
The bottom line is that the Government is able (Particularly with smoking) to recoup some of the direct and indirect costs through increased taxation and excise (That's why a packet of Marlboro is $5.65 in the US and $30+ AUD here)
I know from reading your posts that you're a smart enough guy to see the underlying selfishness in what you're arguing, I'm not being a dick I just don't think you're seeing the full picture.