Here's how I see it: Drugs can be dangerous, but so can pretty much everything excessively used. Driving is dangerous (and not even when used in excess), swimming is dangerous, but there are precautions in place for these. A big reason drugs are so dangerous is because they are illegal - no regulation of exactly what goes in, and people are probably too scared to admit to taking illegal drugs if a health problem occurs.
If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. - J.R.R Tolkien