I too was a smoker for over 15 years and now have been vaping for a couple years now, you won't regret the switch, it may take a week or so to transition from smoking to vaping but those hurdles become smaller the more you vape. As result, its a much better alternative, sense of taste and smell will improve, cardiovascular even your skin will start to rejuvenate looking more healthier(i get those compliments often) and much fucking cheaper! If you feel the need to have a smoke just for the nostalgia of it, go for it once in a while, however the more you start to vape, the more revolting smoking cigarettes can be.

All the best mate