There are more than a few people out there who have struggled at first with switching from smoking to vaping, because they don't get the near instant gratification of a nicotine hit that they would get from a cigarette. They also struggle with the harsh throat hit that high strength ‘traditional’ e-liquid can provide, which is off putting at first to a new user and requires persistence to get used to.
Nicotine salts work differently, and are able to provide that nicotine hit quicker, satisfying nicotine cravings within a few puffs, and the throat hit is far smoother with a higher nicotine concentration. This is perfect for someone trying to quit smoking and move over to vaping,