why politicians should be fighting their hardest to legalize recreational use of cannabis

If one of the defining results of cannabis use is the happy, relaxed, care-free mentality of "fuck it", you'd think every politician would b fighting as hard as possible to legalize it--seriously, think how much shit they'd get away with "leading" an entire population of "fuck its"... but really, politicians should be giving it away and even teaching people how to smoke it. or at least setting the age restriction for cannabis use to at least as low as 18--the age requirement for voting in Norway