There are people who vape that have never smoked at all, though they tend to be rare.
Once you start smoking, and then replace it with vaping, you end up in my catagory who started vaping to quit or cut back on smoking. Once your hooked on smoking, it can be very hard to quit period. This is the majority of vapers.
Some start vaping just to be cool, and no I don't get that. They tend to be rare but they do exist. There are some that have never smoked at all that do it for medical reasons, these people tend to be rare also, but they also exist.
Here are some honest opinions...
I don't encourage vaping to those who never smoked, because there will be someday they cannot vape, and then what?
No money, forgot something important, mailman lost my package, etc... It happens to the best of us, and knowing that up front is only fair.
The flip side of the coin, is there are people who see value in the proper use of nicotine regarding memory and concentration or improvement with other medical issues. For many people, it can make their day a lot easier to deal with, and that has merit to. I understand people like this, and most adults can make a reasonable decision regarding this. Sadly most of these people, learn this fact by smoking in the first place. There are a few in this group who have never smoked at all, and ran into the fact that nicotine might help them cope with their medical issues and decided to try it.
Vaping is much better for you than smoking is, in that regard, and if your going to go down that road as an adult, vaping is the way to go. Your health risks are much lower, and there is a lot of other chemicals that you get while smoking other than nicotine.
Of course this brings up the topic of people starting with 0mg nic. I don't see a lot of value in that for either starting group who never smoked, as one doesn't need to vape, and the other needs the nic. 0mg tends to have more value for people who have used nic before, and are trying to break their dependence on it.
If you smoke, there is a lot of value in switching to vaping of course.
I hope that answers your question, its the best answer I have for you.