There is a whole set of other reasons to turn to a vegetarian diet. Three quarters of our agricultural land is used for grazing and feeding animals... Cows produce methane which is 22 times more harmful than CO2, and the demand for beef is increasing day by day.
I really recommend anyone reading this response to take out some hours of your life and watch 'Racing Extinction' and 'Earthlings’. It will give you some really good insights.