Question

debate on all should be vegetarian

Answer 1

I dont think all should be vegetarian. Its their desire but being vegetarian is good health

Answer 2

never, i am a vegetarian but if everyone becomes vegetarian, think of it:
3/4th of earth is water and only 1/4th is land and all vegetarians depend on land  and others will depend on water for seafood but if 7 million people of the world depend on land i.e veg food we can be sure that there will be lack of food