You're engaging in what is called the naturalist fallacy. That's the idea that just because something occurs in nature, it is innately superior to something human made. This is bullshit. Yes, some synthetic drugs have harmful side effects, but that's unavoidable when you're dealing with something as complex as the human body, particularly the human brain. You can get addicted to natural things too. Caffeine occurs in nature and it's addictive. But since we're talking about addictions, you seem to be addicted to making the same arguments over and over despite losing them repeatedly.