First of all. The topic is not legalization, but RE-Legalization. The first cannabis laws were not put on the books until 1914 in El Paso, Texas, as a means to oppress Mexicans.
Boo-FUCKING-hoo! You could always legitimize your business. Of course, you would have to keep books and pay taxes like the rest of us. Or you could move on to items that remain illegal to continue your black market trade.
Bullshit. As long as there are indoor growers who need a continual harvest, there will be sensimillia. By the way, there was sensi coming out of Mexico grown outdoors when the indoor growing movement was in its infancy.
Water will always be a precious commodity. And large scale cannabis and cannabis hemp will use no more water than cotton currently requires.
One good reason to re-legalize? Freedom. That's good enough for me.