Pros and Cons of Vegetarians Most recent studies show more people are shifting to plant based foods i.e. becoming vegetarians. There may be  many reasons for this but this depends on individuals also . Some of the common easons are - health issues , religious issues , animal friendly concern , concerns about excessive use of environmental resources , avoiding hormones present in animal foods  etc.  Becoming a vegetarian is easier nowadays with more dining options . Earlier it was thought that plant based foods lack required nutritional values but recent research shows plant based foods too have not