Do you figure that? I guess we will see.
In any case, you did make a few inflammatory statements like "It can't be much better." So far (admittedly projective figures) would say it is 96% BETTER than smoking, which is a LOT better.
The oily residue on things does not "build up" in your lungs, to the best of my knowledge..
Your rash could be based on a LOT of things, including flavorings, heck EVEN the type of coil material you use, some folks don't do well with certain metals. You may need more research or even an allergist to work with you to deal with the rash.
If you are craving vaping may I respectfully suggest snus? It is considered harm reduction and I can go up to 12 hours without vaping OR thinking about it at work,
You can import much fancy stuff from Sweden (they were the ones that developed it,) However, you can also buy a tin of Swedish snus at many gas stations for like 4 bucks. It is confusingly labeled American General Snus, but it is Swedish, and the taste may be intense at first but give it a try, it may help with the vape cravings, and that's worth SOMETHING.
Here you go:
Snus Finder | Find snus in stores near you
Anna