I did it for financial reasons. The Williams anti-foam that I used quite allot went up to ten dollars per four ounces. I just couldn't justify the cost. I paid sixty-three out the door for the gallon. Sure, it'll last me for years but, I don't have to think about it anymore. The company also sells Five-Star equivalent products, Lactic Acid and all kinds of everything else at wholesale pricing. For brewers that brew often and are in the hobby for the long haul, it just makes economic sense.