So, I vape more than I smoke because of DU.

[hedda_foil]

2. I quit by just vaping instead.

I had smoked forever and had quit any number of times but always gone back. By just vaping whenever I wanted to smoke, I was able to quit cigarettes for good 3+ years ago. I still vape, because it's just an alternative nicotine delivery system, but it's a lot less worrisome to me. I use the rechargeable kind that look like cigarettes, as I'm turned off by the other kind. I've tried several, but I've been staying with Eversmoke because they have the fewest impurities and use glycerine for the base instead of propylene glycol. Also, because the cartridges are loaded in the US instead of China. Hope this helps. Good luck!