I don't use cannabis but based on what the NHS has to say about it (https://www.nhs.uk/live-well/healthy-body/cannabis-the-facts...) it's probably not a great idea to use it for most people. However it is important not to waste tax revenue going about trying to stop people in a heavy handed manner. The biggest issue with it seems to be around driving, much like alcohol. That is a real problem and people should be made aware that they should not drive under the influence.