If you are fortunate enough to have never been addicted to anything like alcohol, tobacco, painkillers, or opium it would be difficult to explain so you’d understand what the compulsion to relapse feels like. In the case of tobacco, my former habit, the extreme anxiety when the effects of your last cigarette begin to wear off is genuine and physical. For months after I quit I’d have dreams about having a cigarette. For those who have quit, remaining “sober” is a day to day struggle. It may be a “choice” to start, but once addicted the craving never fully goes away. Better to pray thanks that there but for God’s grace go you than critique others for what you perceive as their weakness.
I am one of those fortunate people. When a sign of addiction hits, I force myself to stop the thing. I think re addiction I got good genes. (I allow my addiction to 90%+ dark chocolate as I don’t see any harm).