for Type A people like myself who are kinda anxious but not really that much, and who are perpetual students of the "Art of Relaxation" (a whole topic by itself), kava is purely recreational.
It 'aids' in the enjoyment of life, relaxation or just to wrap up a busy day of work.
In the South Pacific, this is mostly the case, people drink kava to enjoy themselves with their friends and community members.
However, as it was discovered relatively recently in the Western world, (a blip of time, given Kava's 3000 year legacy) that it also helps with anxiety, etc.
In essence, your author is a recreational kava user (almost 100% of the time), however that is not the case for quite a few people.
Aloha!
A.G