[forthispurpose]

because smoking addiction is largely psychological

smoking a 0mg e-cig is as pleasing as smoking an e-cig loaded with nicotine. Speaking from personal experience of smoking over 10 years. Quit at some point for a few years, found out about e-cigs, made some 0mg juice myself, enjoyed it. Burned a few e-cigs and eventually bounced back to regular cigarettes. Smoked for a few years, then quit for good.

The pleasure of a cigarette is not in the effect that nicotine has, but more in the ritual, watching the smoke coming out your mouth, the burning sensation, the deeper inhalation.