I knew I had to quit before I discovered vaping. I had peripheral arterial disease and my health was poor and getting worse. The coughing up gunk got real old. I had horrible leg cramps at night trying to sleep, and could not walk more than 100 ft. before my left leg would cramp up bad. I looked up the symptoms, found peripheral arterial disease, and among the causes smoking. I'd already become disgusted with my smoking, it was messy stinky, and expensive.
We were spending over $500 a month on cigarettes, and good grief, that was our rent at the time! It had to stop, but I was a two pack a day smoker and really hooked solid. Then one day Doug gave me a cheap little flea market ecig that had been given to him. No button, you just hit on it and it vaped, very poorly, and you could vape on it for two hours before you had to charge it for three hours... but, I didn't need to smoke while it lasted. I needed something that would last all day so I didn't have to smoke at all.
I went to the flea market it came from, and found something better, but still not good enough, and kept learning and getting better equipment until I was satisfied. That took sub-ohm gennies on mechs, which two years later I'm still using. I know that vaping saved my life, and I shudder to think of where I'd be now if I'd not discovered vaping.