This kind of question requires you to first separate the emotional context from the word. Just take it for it's literal meaning. It just describes what you and I are doing with nicotine or any other drug someone may have a physical dependence on.
Addiction is troublesome when people write off those around them and making their addiction priority one. They sacrifice their happiness and the happiness of others around them to achieve this goal. There is nothing wrong with someone that likes to drink alcohol, smokes cigarettes, or even use drugs if in moderation. Once they step over the line of something they enjoy to something that is the only way to get enjoyment THAT is when it is a problem.
As a hypothetical example, take any illicit drug. Typically they are difficult to control and those that use them end up becoming dysfunctional. If we developed a way to produce the effects of being high on a drug without the undesirable consequences and difficult physical addiction would it still be wrong to do? This is a general example, but it certainly could be possible for something to be developed that had these sorts of properties. Using a PV isn't too far off, technology has allowed us to remove a large majority of the consequences with using tobacco. In this situation, if the person using the device is happy and those around them are completely unaffected, why is it still wrong?
You can say the person is a slave to the chemical, controlled by it, but if they are not harming themselves or others who am I to dictate what they consume. There are still risks with using a PV, but my chances are much better than before to the point that when my time comes it won't be due to nicotine use. Society in general is taught to view pleasurable things as wrong. Sex, .........ion, drugs, anything that isn't part of a stoic existence all carry this baggage. I think people need to look at things from a different perspective, ask questions, and learn more than just repeat what they've been told.
The world that exists today isn't the world that will exist tomorrow, we need to let go of these black/white definitions of everything and look between the lines.