IS IT HARAM TO BE A VEGETARIAN?

It is NOT haraam. There is nothing wrong with just eating veggies, but too much of one thing is good for nothing and even though it is not haraam, it is recommended because Allah has put the animals on the earth for us to eat. You may end up lacking some stuff and find you may get weaker in your body because you are missing all that nutrients from meat for a long period of time. Chicken and sheep is some of the best meats and milk is very good. May Allah guide us and keep us all on the straight path...Ameen.