Many states are modifying their cannabis policies to include unexpected restrictions. For example, some people are no longer able to use as much medical cannabis as they would like or the way they’d like to due to the dramatic effects of amended cannabis laws. One big reason for an mmj card is due to economics, as most states do not tax medical marijuana, as opposed to heavy taxes on recreational marijuana.  If a user spends X amount per week, based on the cost of an mmj card in their area, it may be in their self interest to get a card as products will be cheaper with no heavy tax burden.