Is electric cigarette is really good rather than a regular cigarette?

Yes: Yes - as long as it does not have any nicotine or tar in it ; ;water vapor elec cigarettes are an excellent alternative to a real cigarette.

E-cigarettes.: Technically speaking, we don't really know the safety of those electronic cigarettes in the long term; we are learning more and more how unsafe they are. But what they do help with is removing your emotional and mental attachment to actual cigarettes, which could ultimately help you quit everything. As well, there seem to be fewer ingredients in them; there are 42 carcinogens in cigarettes.