I once went on vaca with my AH, who is an alcoholic and a career pot smoker. We were in Northern Maine when he ran out of weed. He simply could not enjoy vaca without pot, so began hanging at the c store near our hotel approaching guys that looked like pot smokers to make a connection. When that didn't work, he drove all night to our hometown in MA (300+ miles) to connect, then drove all the way back.
And pot isn't physically addicting? Maybe not for some, but for AH, he has a difficult time sleeping and focusing without it. He also gets sweaty and shaky . Maybe because todays pot isn't the pot of the 60's ~ lots of chemicals, additives, and who knows what you're smoking.