I switched from marijuana to spice and my cravings for pot went away, my cravings for cigarettes went away too, even when I was drunk. Then they banned spice in my state and I had to quit that too. I had no desire to smoke weed anymore and drinking was no fun without the spice or pot to go with it.
That's when I decided to give up the booze.
I've been sober 10 months 7 days, it's been just over a year without any spice, and over 2 years since I last smoked pot or cigarettes.