If we all turned vegetarian the countryside would be a more interesting place. There would be more room for animals in their natural habitat, while fruit and vegetable crops encourage the existence of a greater variety of wildlife. We have a choice the right choice is a vegetarian one. Our choice of diet is not about being natural but about making the right choice. Vegetarians reduce suffering.
Animals are sentient beings.
Many have complex emotions and can suffer pain. Eating meat causes suffering and distress, this can be reduced by going vegetarian. You can still eat your favourite foods. Even the traditional meat eater obsessed with burgers and sausages can survive on a vegetarian diet. There is a huge range of meat substitutes and alternatives readily available, including burgers, sausages and even veggie bacon.