I do find it odd that so few breweries sell 32oz or 1 liter growlers. At least in my case, a gallon of beer is to much beer to drink in one sitting. I can do 32 oz or even 1 liter, but 64oz is just to much. So that prevents me from buying growlers from breweries that only sell 64oz growlers. I'm grateful to breweries like Stone and El Segundo Brewing Company that offer 1 liter or 32oz options. My question is why do so few breweries offer 32oz growlers? Why had the industry settled on 64oz? I would think they would sell more beer if they offered 32oz or 1 liter options. What do you think?