"I am strongly against drug use" Why are you strongly opposed to letting individuals decide what to put into their body? Are you also strongly opposed to alcoh

"I am strongly against drug use" Why are you strongly opposed to letting individuals decide what to put into their body? Are you also strongly opposed to alcohol and tobacco? I just don't understand why many people opposed to marijuana are OK with alcohol; drunks are more likely to speed, brawl, and generally behave poorly, while stoners are more likely to drive 15MPH, munch on snacks, and generally chill out.