Jainism is the first religion that has made vegetarianism a...

Jainism is the first religion that has made vegetarianism a fundamental necessity for transforming consciousness. And they are right. Killing just to eat makes your consciousness heavy, insensitive; and you need a very sensitive consciousness - very light, very loving, very compassionate. It is difficult for a non-vegetarian to be compassionate; and without being compassionate and loving you will be hindering your own progress.