I don't smoke cigarettes. But this thread has convinced me to give the e-cig a try.
From what I understand of the science, most of the nicotine absorbtion from these is through the nose and mouth, so inhaling is actually, in theory, completely optional. And they have some really amazing flavors - I've been vaping a blend called "Wyatt Earp" which is a very aromatic, pipe-tobacco sort of flavor. It's very nice.
* No, you shouldn't. They're bad for you.