It is a bit silly to ban a useful drug like pseudoephedrine while large parts of the US is in an opioid crisis. Kind of like how lawn darts have disappeared from stores but you can still buy all sorts of weapons. That said, a lot of laws are based on established traditions. Alcohol use goes back thousands of years, and the other things you mentioned such as vehicles and weapons are tools going back even longer. They are dangerous tools, to be sure, and often employed unnecessarily in this society, but tools nonetheless. Once upon a time most people depended on their weapons and vehicles to survive, and differences in the quality and quantity of weapons and transportation technology have historically led to the rise and fall of entire civilizations.