Clearly I dont understand it and only you in the whole wide world canIt's clear you dont understand it. Of course alcohol and marijuana are both addictive and harmful for society however, in the case with both by and large people can control their intake and majority never become addicted. For hard drugs like heroin it's a different scenario.
I agree tobacco is both harmful and addictive but you can't put it in the same conversation as heroin, that's naive
Have you personal experience of taking (smoking/injecting) heroin ? or is your experience just 'natural'
Tobacco is addictive, so people arent really controlling their intake, its controlling them.
Alcohol is addictive and highly disorientating. People in a state of drunkenness arent in control, in fact they've lost control.
Marijuana is habit forming and most smoking it will continue to smoke it come hell or high water. While the addictiveness of it isnt as strong as tobacco or other drugs, it does clearly have an addictive nature, to which there are withdrawal symptoms. So again its not a case of people controlling it,but of it controlling them.
Heroin is addictive, and has strong withdrawal effects. But like all three above its not instantly addictive, and to become problematic you need to keep taking it, much like with tobacco or alcohol or even marijuana.
So on to danger. Smoking kills 78,000, alcohol kills 9000, heroin kills 2000
Most dangerous drug isnt heroin mate.