When the Agarwood Tree gets a mold infection, it starts to secrete this nectar that fights off the mold. It turns the inside of the tree red. When burning the red wood, it creates a super pleasant incense aroma, so the price on it is high. If the mold never attacked the tree, it would have just been like any other tree.
But because the tree was special, it got murdered to sell its parts. Welcome to the Universe, faggot.