I have a lot of friends that have made the switch.  They then tend to end  up in two groups. Ones that get highly addicted to vaping and those that go back to cigs.

The problem with vaping is that :

1 . It can get seriously addictive as well (because the flavors taste so good and there is an endless variety. )
2. some juices can have just as much nicotine in them than cigs
3. Breathing in hot vapor all the time instead of oxygen cannot be great for the lung or brains.

Some can manage to get themselves weaned of cigs and only vape sometimes tho.  I guess it will depend upon you and your willpower.