Are you kidding me?
So I could have a friend addicted to cough medicine, caffeine, tobacco or cannbis...but not meth because it is 'hard'
Or maybe not even they're straight...maybe my 'friends' are going to jack me so they can buy a pack of cigarettes or a box of coricidin or a coffee...I better watch my back.
This drug is undoubtedly addictive and addictions can cause people to loose control, but that is from the persons personality not the substance.

It is the same bullshit the government starts with "Real friends don't let friends do drugs." mainly targeted at marijuana smokers. Wake up.