Why do people say weed isn't bad for you?

Im not going to say who, but someone i know got addicted to it. It caused the person to think certain things, and in the end it got the person depressed, and many other things. It wrecks peoples lives, and is addictive. If you think weed is a perfectly good thing, and doesn't cause any problems. Well im not sorry, you are a complete and utter DUMB ***. This isn't a question, just had to vent how i felt.