This is true for many people, including me.
I agree as well. The last 20 years or so of my 'cigarette habit', I knew it was bad for me, but I still enjoyed it and had no intention of quitting, again. The tobacco taste, the warmth, the throat hit, and basically, just the feeling of it, appealed to me more than logic..
In fact, I was in the smoke shop to get another pack of those nails but the line was very long so I just burnt up some time looking at the various vaporizer starter kits they had. My neighbor had been vaping exclusively for the past three months, so my interest level was high and I had been somewhat researching this 'vaping thing', more than enough to know that I wouldn't be inhaling anti-freeze or battery fumes.. That afternoon I left the store with a CE4 eGo and that night I realized that I had no 'cig craves' all day. In 8 days it'll be two years and I wish this was around 30 something years ago..