Growlers are a great way to showcase local breweries, provide fresh (potentially preservative-free) beer, and to bring additional business to small local boutiques. Craft beer is the largest growing segment of the beer industry, and growlers statistically are predominantly used for home consumption.
In short, Growlers are an untapped (pun intended) revenue stream that promotes responsible drinking, because it's the only practical way to have draft beer at home.
Thank you for your time and consideration