It's one of the few major societal problems that can completely fund itself to the full extent current science permits. Unfortunately, many states, such as Colorado, are already blowing it by using the tax revenue from marijuana sales as supplementary income. Looking at state lotteries shows us that this path leads straight to hell as government becomes reliable and dependent on this money so much so that they actively push, and twist to appear noble, clearly destructive activites.

Washington, on the other hand, appears to at least be funneling revenue soley into the health department.