Is purchasing factory farmed animal products ethical? The OP brings up several semi-unrelated issues. Namely, abuse of factory farmed animals is by definition not the intention of the business. Thus it is rightly condemned but it is reasonable to purchase products from the business since it is not the intent of the business owner. Separately, it is also reasonable to boycott factory farm products because small farm animals experience a better life, though one could forgo the boycott if the plight of factory raised animals was not of importance to you. Lastly while it is completely reasonable (on many fronts) to be a vegetarian, it is illogical to prohibit the culling of domesticated animals, since that is the purpose of animal domestication.