However, if you decide that you cannot support the usage of animals, refer to the by-product pages again to see if you can really survive without everything that animals, especially cattle, have to offer in the way of improving your life. In production agriculture, economic viability and long term security arise from responsible management of natural resources. And that management by the private property owner holds them accountable by the economics of their stewardship. It's in their long term best interests to enhance those resources. If a person sits down to a meal, even a vegetarian meal, they have taken life.
Food is grown in fields that have been cleared of all other life.
Even the paved highways our food is transported on resulted in loss of wildlife. It's the nature of nature that things have to die for us to live.