You are right and wrong. If you are not smoking and you go get an e-cig because "It seems fun, and I like all those eliquids that are available", yes it is bad. If you are able to quit smoking in one day, yes, it's bad too.

If you are addicted and can't bring yourself around to quit smoking, you are better off with an ecig than a stick of death.

I was a smoker for ~14 years. I've quit smoking since May of 2016 with an ecig. I never looked back. I'm in the process of lowering nicotine (went from 20mg/ml to 8mg/ml in the past 12 months), and in a year or so, I'll quit vaping too.

Noone says that ecigs are completely harmless though.