The reason they feed on human beings is because ritual, pride and health reasons as well as strength. Trust, when the tribe they won the war, the opponents were caught and still alive then they siangi / in skinned alive, then burned or boiled, and they ate-yack in a ritual ceremony, while his skull they put it in a place as a sign of victory.
Then, how the tribes in Indonesia, is there a cannibal tribe in the archipelago, the answer is no. Here are some tribes in Indonesia who practice cannibalism.
Punan Dayak tribe.
Although most of them are already living a modern makeover, but based on the story that their ancestors were not taboo to eat human flesh, until the government of the Republic of Indonesia in the 1970s prohibits dropped straight to the ground. Punan Dayak tribes living in the area of West Kalimantan, East Kalimantan and Central Kalimantan, live along the river and moved often. In the past they were very good at fighting and always cutting his enemy's head, to the technical term "ngayau" or "Head Hunter". From recent research, it turns out Poenan primitive tribes still there and visible in the interior jungle caves forests of Borneo.
Tolai tribes in Papua.
Although most of them living in Papua New Guinea, but there is a small part of life on the border of Papua, Indonesia. They are known to cannibalism when tribal Tolai modern apologized to the government of Papua New Guinea for the murder and cannibalism committed by their ancestors to the British missionaries in the 19th century and in 1978 they killed the minister and three teachers from the state of Fiji, who then cooked and eaten grilled.
Korowai of Papua.
This tribe inhabited the plains in the south of Papua, living along streams and swamps. Korowai, such as the tribes in Papua mostly, nomadic or sedentary and rely on his life from nature. Because the area is quite fertile, making them must often fight with other tribes. In battle, they often use poison on the arrow and spear that most of them made of bone over and over. Their habit of eating human flesh is not in vain, but because the victim often perform customs violation, then arrested and tried, once found guilty, the victim will be in ritualkan and eaten together. Their presence is still there to this day.