Stairs kill 12000 people per year. That sounds pretty dangerous to me. Guess they should be illegal? In fact, i'd argue they are worse, because you often cannot choose to not use stairs because they are dangerous. You can however choose not to use drugs. Drugs only kill people who willingly decide to use them, knowing they could die as a result. Stairs kill innocent people who just needed to get some where. In fact the dangers of stairs are not even well known. People probably use stairs thinking they're perfectly safe. Yet they kill 12,000 people per year, in the US alone. Unlike drugs, which everyone knows are not safe.
You know what else is dangerous? Drug prohibition. How many people do you think die every single day because of drug prohibition? Not just the war on drugs, but also indirect deaths, such as from, i dunno, drugs (more on this later). And what do you think you get out of those deaths? Nothing. People still use drugs. The law does not deter anyone from using them. Feel free to lookup drug usage statistics in holland, where drugs like marijuana are sold in stores, and the government more or less refuses to prosucute anyone for other drugs (they're still technically illegal because of international politics bullshit).
You know what we could do with another ninety fucking billion dollars a year? We could save some goddamn lives. Lives that actually want to be saved. Not lives that are intentionally thrown away by their owners because they chose to partake in an activity they knew full well could kill them.
And of course drug prohibition makes drugs far more dangerous than they otherwise would be. Regulation would prevent anyone from receiving tainted drugs. Easy access to clean needles would slow the spread of aids, hepatitis, etc. Access to facilities with doctors on staff would allow significantly faster treatment in the case of an overdose, not to mention they would not be able to eviscerate babies, etc. I could go on and on about all the ways legalization would make drugs far safer.
In no universe does drug prohibition do more good than harm.