I will not repeat the list. If we ban all substances which can be abused, civilization will be hurled back to the other side of the cave. After all, caves are dangerous. Some teenagers, and others, die in irresponsible cave exploration. We must also ban fire and the fumes that it produces.
Some people hang themselves with clothing.
That's where we'll be if all substances which can be misused are banned. It's worse than foolish to try to create an idiot proof world. For one thing, part of the lawless attitude of our nation today can be traced to the proliferation of laws. Laws were far more respected when we had far fewer of them. When innocent acts, like possession of whipped cream, are illegal, the respect for all laws diminishes.