Rav Kook and Rabbi Joseph Albo believed that people would again be vegetarians in the days of the Messiah. And none shall hurt nor destroy in all My hold mountain. Judaism has many important teachings concerning proper treatment of animals. Moses and King David were chosen for leadership, and Rebecca was deemed suitable to be a wife for Isaac, because they were kind to animals. Concern for animals is even expressed in the Ten Commandments.
Many Biblical laws command proper treatment of animals.
In contrast to these Jewish teachings, animals are raised to produce food today under cruel conditions in crowded cells, where they are denied fresh air, exercise, and any emotional attachments. Judaism regards the preservation of health as an extremely important religious commandment. The talmud teaches that Jews should be more particular about matters of health and life than ritual matters. In contrast to these teachings, flesh-centered diets have been strongly linked to heart attacks, strokes, various types of cancer, and other diseases. As a result medical costs have been skyrocketing in recent years, contributing substantially to governmental budget deficits.