What makes you think that way?
Bolded I presume?
Because these are actively harmful crimes where one person violates another's consent. A murderer takes away a person's life. A violent person harms someone else when they don't want to be harmed. A person watching child porn actively participates in a trade where kids are shipped around like objects and routinely sexually abused by people old enough to be their fathers. And so on. I'd go so far as to suggest theft is actually more "sinful" than simple drug use, as you're taking something from someone without asking.
Hard drugs? You're choosing to fuck yourself up, and in the end, you're still held accountable for crimes you commit that do violate others when under the influence. Sure, you may be somewhat pressured into it if you're in a bad environment, which is bad, but this applies to all sorts of things that can be bad for you but people still choose to do, and the problem there, again, is having something forced on you against your will.
So, what's the death ratio? Are you telling me America has just as many people who do drug as people who consume alcohol? Only 40,000 people died of gun shot last year in America, fewer than half of drug death, I guess no point in banning guns either?
Don't move the goalposts. You didn't talk about ratios. I was merely playing by your game. I, at any rate, feel statistics alone do not paint a proper picture of any problem.
So. Do you want to ban alcohol as well? Research has shown alcohol use is just as dangerous as coke use. Coke, at least, is usually not fatal when you get addicted and go through the pain of withdrawal, while alcohol withdrawal often leads to death; though this is admittely traded off with coke being far easier to OD on. So they're equalized there. But outside of that, both fuck up parts of your body beyond repair, both addle your mind in the moment, both cause a lot of harm to the user and to those around them.
For the record, if you think we should, I disagree, but I can totally respect that viewpoint, 100%, as someone who chooses to live alcohol free and drug free. But if you don't, then I do think it's highly hypocritical to say one dangerous, recreational substance is okay but the other is not.
Guns, I'd also argue, are not equatable to drugs. No one shoots people with drugs. There's not some guy walking around with a needle constantly shooting people up against their will, or dropping coke powder on people. Again, of course, drug pushers are bad, but we're not talking about that.
Internal rebellions that cost tens of millions of lives weren't the reason, it was just drugs making people miserable
Let's not understate the impact of opium though. Yes, the internal strife of China at the time was a big part of it, but the opium certainly exacerbated it beyond short-term repair.