I smoked cigarettes for more than 52 years. 2.5 PAD when I started E-cigs. Started vaping 3 years ago using DIY Cinnamon blend. Became concerned I was vaping too much Cinnamon. Mixed the next batch without it. 24 hours later I discovered. . .I’d accidently left the nicotine out of that batch also. Decided if I’d gone without it for 24 hours. . .then who needs it. For the next 6 months I vaped nothing but 50/50 VG/PG. Probably would have gone on forever if I hadn’t had to enter hospital for surgery. 2.25 months in hospital w/o my ProVari E-cig. My story, I ACCIDENTLY quit smoking cigarettes after 52 years by using an E-cig. I doubt I’m anywhere near typical, but it worked for me.