It depends whether you want to stop or not, it’s as simple as that.
E-cigarettes can be a great way to quit smoking, if that’s what you want. If you just switch to an E-cigarette and expect to magically stop smoking, you’re in for disappointment. Nicotine cessation is entirely psychological.
It’s a little bit like that Lap band surgery. You still have to want to lose weight after, otherwise you will blow it open and it will do nothing.
If anyone actually wants to quit smoking I highly suggest the book “Easy way to stop smoking” by Alan Carr.