Sorry for the tone of this message but it pees me off when people make light of drug addiction.
Don't apologise for the tone of your message because you're right. I know what it's like to see how drugs can destroy the lives of people you love because I've seen both alcohol and tobacco do just that to several people.
No-one is making light of drug addiction in the slightest. No-one is saying these kinds of things are harmless.
But as I said, I know a few people who've had their lives ruined by alcohol. I know one person in particular who's had their life ruined by tobacco. I also know someone who died from taking too much ecstasy.
Yet despite this, I do not believe that what happened to these people will happen to everyone who indulges in these substances. It is absolutely vital, of course, to acknowledge the risks involved in using them. But it is also vital to remember that serious negative experiences are necessarily inevitable. For every substance where I know someone has suffered very badly, I also know several people who genuinely don't have any issues.
Would I recommend people smoke weed? No.
Would I say weed is addictive? I honestly couldn't say, but the evidence points to a possibility of psychological addiction (which is separate from physical addiction) from the weed itself and physical addiction from other things that tend to be mixed in with weed (which is tobacco, not rat poison. I can't even imagine how rat poison could be used to bulk out weed as it looks nothing like it).
Is smoking weed always harmful? Not necessarily.
Can smoking weed be harmful? Absolutely.
There is a world of difference between 'making light of an addiction' and having a rational discussion about a substance. Please don't confuse my stance for making light of addiction or the damage it does to people.