Unless vaping makes you smoke more compared to cigarettes. In my experience it does. Nicoteen us crazily addictive whatever form you provide it in people will do that too much. The more convenient the more they will do it.
I don't think even this is true. The nicotine isn't really what's bad for you, it's the smoke and 600+ carcinogens in cigarette smoke.
I'd imagine it'd be safer to vape 10x than smoke 1x.
That has not been my experience. With a cigarette, once you start it going, you basically need to finish the whole thing in a short period of time. If you really only wanted one or two drags, sorry, you're down for 10 minutes or so of smoke. (Or you could put it out and waste it, but given how expensive cigarettes are I doubt many smokers are inclined to do that.) With vaping, you can take one drag and put it down. Figuring out the volume or amount of nicotine consumed would be very complicated. And, of course, most of the negative effects of smoking have nothing to do with nicotine and it seems if there are negative effects from vaping, those will likely also not come from the nicotine itself.