Some people aren’t able to consume dairy,–due to allergies, or they don’t want to support the veal industry. Cattle can emit CO2 as they burp, or something similar. Some cattle farms has been attacked by snowy weather that can really kill them off. Relying on a dairy-free diet is the only way to free up land space for planting crops. Not just planting crops help implement a food source; you also generate more oxygen for our planet.