Well, look at it this way: Smoking was something that many of us really enjoyed, but it was never something that we were able to actively engage ourselves with beyond satisfying our habitual urge to smoke. We enjoyed cigarettes peripherally; almost like we might enjoy the music playing in the background of a restaurant while we carried on a conversation with someone over dinner.
Vaping lets us interrupt that conversation and put the headphones on for a while, so to speak. With so many toys and gadgets and flavors and new things to explore, we now find ourselves faced with a proposition that is far more powerful than simple cigarette addiction: Vaping gives us opportunity to engage in a genuinely enjoyable activity that we can interact with and even mold to our own personal liking. Cigarettes offer nothing in that regard. You buy 'em, you smoke 'em. Rinse, repeat, ad infinitum (or until it kills you, whichever comes first... usually the "kills you" part).
It's very interesting behavior that we exhibit as vapers. I'm sure there are some psychological factors at work here too, but I'll leave that for someone more educated than myself to explore.
In the meantime, yeah. So what. I got some vapin' stuff.