My reasons are diverse.
- The more I learn about the human digestive track and how it processes (or more accurately struggles to process) meat, the more I'm unconvinced that humans are actually omnivores. Perhaps some of our genetic features like our teeth may suggest we are, however as a counter example Gorillas have much more sizable canines, and yet they are fruit eaters. Further, at one point in history deer ate field mice, yet we can agree that now they aren't omnivores. I believe there may be value in challenging our definition as omnivores. Our intestines do not have nutrient receptors for heme-iron from meat either.
- There is no nutrient that I must eat meat to acquire, and for all the nutrients I can get in meat, I can find another source that does not pollute my body with cholesterol. I have lost over 25 lbs and my blood pressure is down its best levels it has been since I was a kid. My resting heart rate has also lowered. I have not suffered in my protein intake nor have I had a elevated level of carbohydrates in my diet.
- The main thing here is that I do not wish to enter in what has been described to me in the most dramatic of terms a "mercenary relationship" with another creature. I'd more simply say that if I could not personally bring myself to kill and butcher an animal for use, then I'm not going to pay another person to do it on my behalf. In this regard, I actually have much respect for Native American views regarding the relationship between humans and other animals. I simply know that I could not do this myself.
- This is my biggest issue. In a world where people are starving and thirsty, the use of natural resources should be reexamined. For all the crops that are devoted specifically to making feed for animals to be butchered, we should be devoting the land and water to crops for people. The economy of which is outstandingly poor. In the case of beef, for every gram of edible beef, eight grams of feed must be given to the animal plus great quantities of water. If we could provide clean water to every human on earth, we'd wipe out perhaps 50% of communicable disease. When I evaluate the human element of eating animals, I cannot find a reason that I am entitled to a steak whose resources represent the meals of eight other people.
- Related to the statements above, the carbon footprint of eating animals is huge.
I certainly don't think people that eat meat are bad people. I don't think they are dumb people either. I made my decision for myself based on how I personally wished to contribute to the world. In the end, I summarized that I gained nothing from continuing to eat animals and animal products. I feel my exploration is far from over on this topic. I'll probably continue to find ways I can implement my observations on my lifestyle in the future.