I'd say stop if you can, (and by any means I don't advocate smoking), but if you've smoked this long, a few more days
probably won't kill you.
Yeah, I'm curious about how lungs act with vapor too. That's why I posed the question to long-time vapors who don't inhale smoke.
EDIT: I should admit I've not fully given up cigarettes myself. In fact, I fell off the wagon for about a week or so and completely stopped vaping. Transitioning myself back to vaping again, and I've already noticed how quickly you lose some sense of taste, and how quickly your lungs revert to "smoker lungs". Or at least "not-used-to-vapor-lungs". Unlike some, I've not had the ability to pick up a vaporizer and never pick up a cigarette again. However, if I can stick with it (smoking's just too easy), it CONSIDERABLY reduces the amount of "analog" cigs I smoke. The hardest for me is before bed (my body is used to me "poisoning it to sleep"), and oddly enough, on the computer. I say oddly because my primary e-cig is a USB Passthrough (with Kensington)!