I started vaping in late May, 2009 and smoked my last analog June 6 after a 30+ year two-packadayer habit.
Quitting wasn't my intention at first. All I wanted was something I could huff on when staying in hotels or driving w/ non-smokers. What surprised me was not just being able to quit smoking, but that I preferred vaping. I never felt deprived, ever.
Funny thing, though. About two days after my last analog I experienced a period of whopping agitation. Even though I was vaping almost continuously, it felt like I was going through some weird withdrawal. I've wondered if something else addictive is put in analogs...