I have no problem with the legalization of marihuana, but giving the go-ahead to people to grow plants in their home is a wrong thing to do.  There is no way that these grow operations can be monitored.  Four plants can easily become 4 dozen plants and more - a full scale grow op.  In a past career, I attended hundreds of grow operations that were inside housing premises and have seen the damage that is done to the physical structure of the building.  This is a train wreck waiting to happen!