IELTS Essay: Animals: To use or not to use?

Animals should not be used for the benefit of human beings, unless there is evidence that the animals do not suffer in any way.
To what extent do you agree or disagree with this statement?

There is a lot of controversy about using animals for human needs. Animal rights activists are trying to stop all modern and traditional activities, which involve killing animals or cause their suffering. Traditionalists are trying to convince the community that using living creatures for men's needs is natural and cannot be avoided in everyday life. In this essay we will explore this subject.
Activists, who defend animal rights, are telling the world that people should not use animals in any way. Moreover, they say that animals should have exactly same rights as humans do. The reason is that people and animals are both living creatures and there shouldn't be any difference in treating them. So called extreme vegans are refusing to eat any food of animal origin, even milk or honey. They are trying to convince people to do the same using as an argument that killing animals and keeping them in captivity cause their suffering and not civilized.
Traditionalists disagree with the statement that human should stop killing animals or using them to fulfill their needs. From the very beginning of human civilization there is a tradition and vital need to use animals as a food and their parts in traditional crafts. Without proteins and vitamins of animal origin human body wouldn't receive all nutrients it needs. Moreover, testing some medicals on animals already helped to fight many diseases people suffered from.
I think, people have the moral right to use animals to their benefit, to some extent. I am sure, we should not cause them suffer and die for our fun. Although, using animals for food is natural for humans as a predators, but as civilized predators we should make sure to use only humane ways of killing.