Tobacco is actually more addictive than weed. I have a friend in Berlin who substituted tobacco for some herbal mix some years ago. He was a heavy smoker until then. Basically he just kept on smoking but swapped out the tobacco. A few weeks in he realized he didn't need to any more. It, smells a bit unpleasant but it got him completely off the tobacco with essentially zero effort. He rolls like one or two a day max. Usually with some weed and a beer on the side.

I don't smoke myself (tobacco or weed) but I know plenty of people who do, or who used to (multiple packs a day, like my friend above). Quitting is hard apparently. So, from that to one or two per day sounds like it should be an improvement.

The nastiest thing with weed is having to deal with drug dealers to get it. Bringing it out of the criminal corner is a good thing. There are a lot of drug dealers who also sell far nastier stuff than weed. Crack cocaine apparently is a growing problem in Berlin.