I started drinking two weeks after being raped by a drunken uncle when I was only 11. I found pot a year later and thought it a gift from god, as it did not make me puke or pass out. I did not quit drugs and alcohol until after three divorces and prison. I quit at 37 years old. I had done more than my share of it all. I quit in January 20 years ago.
But it is not required that a person smokes in order to grow mj or design grow systems for others, commercial, or small scale. Commercial design is much more fun as the mechanical systems and monitoring makes it more interesting and challenging. I get paid quite well for designs. Mainly I design legal systems as I am an engineer. The big demand where I live is 8' by 40' trailered mj growing units. They are self contained to include power, heating, cooling and water system. The only fuel source is propane. Without very close examination, it appears to be a standard 40" reefer unit such as those used all over the country. Drag with a semi to where ever and drop them down on their dolly wheels and let them grow away. Once every 7 to 8 days refill a water tank, three propane tanks. All water inside is drain to waste, and the waste water is recycled with nano filtration to remove salts and sent to nutrient top off tanks where EC meters control nutrient additions. CC2, dehumification. Very well weather stripped rear doors. Think about this next time you see a reefer unit sitting on its dolly wheels some where other than backed up to a delivery door. They are still in operation as they are driven down the road as they are aero units. I designed emergency water treatment plants and sewage treatment plants for federal and sate governments that were 40' units and smaller units on metal skid pallets years ago, always with the thought HUM, wouldn't this work nice for easily transportable stealth like commercial growing units. Some goverment research and design work put to good use. Go figure.
Life has it's many twists turns and diversions.