So you're saying marijuana is an addictive drug physically and chemically? I do not believe it is, if that's what you are saying. Can you have withdraws to some extent? Sure but that can be a mindset, it's kinda like an addiction to gambling imo.
marijuana can be addictive, medically, yes there are people who are addicted to it and need treatment.
medically, the controversy is whether this is a psychological dependence, or physical plus psychological....
up to today they estimate around 10% gain addiction, although this is a tough number to pinpoint...as its not legal so if it was more widespread used like cigarettes...would the number go up or would it be different with better data?
but yes...it can be addictive
yes it does alter you enough to have DUI's etc (so how you control this and driving becomes a new challenge)
can't comment on long term affects...some say it hurts the brain some don't....I don't know