Take a look in the classified section of this page.
Note that you will see ads with people selling all there
vaping stuff. They started vaping to quit smoking, usually after years of failure with other methods, many of them FDA approved. Now they have decided to quit vaping as well.
Not everyone does but it happens enough to see that ,regardless of what they were designed for or sold as , many people are using PV's to free them selvs not just from smoking but nicotine and quit vaping as well.
It is a personal choice.
Good luck however you proceed.