Many consumers are drawn to organic milk in part because of what it lacks: Organic cows must be free of any bovine growth hormones and most antibiotics. Also, their feed and the land used to grow that feed must be free of any synthetic herbicide, fungicide, pesticide or petroleum-based fertilizer for at least three years.
Other consumers buy organic to support small family farms, a large component of the organic dairy industry.
Dallas Morning News Business Section
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And then some of us simply like milk that tastes like milk. It's always nice when the business section looks at food as if it is a business plan for some company. Food and taste ... hmmm, can't measure that very well ... must be the "support the small farmer" crowd pulling demand.