Why is biodiversity important to humans? How important is Biodiversity?

Biodiversity is important because it increases ecosystem productivity where all species have an important part to play. For example, a larger number of plant species means a greater variety of crops; greater species diversity ensures natural sustainability for all life forms and healthy ecosystems can better resist and recover from a variety of disasters that not only affect animals and plants but also humans (Why Is Biodiversity Important? Who Cares? Retrieved from: http://www.globalissues.org/article/170/why-is-biodiversity-important-who-cares#WhatisBiodiversity). The same way humans cannot live without other humans. We need farmers so we can have vegetables and meat to eat; we need garbage collectors or those who work in recycling centers to take care of our trash; we need barbers/stylists to cut our hair; and so on. Each one of God’s creation is created for a specific purpose, whether it be the smallest plant, mammal, bird, reptile, amphibian, insect and fish, - it still has a purpose.
For example, the monarch butterflies or any other types of butterflies not only bring us joy when we see them in different colors, but they also pollinate or carry pollen from plant to plant, helping fruits, vegetables, and flowers to produce new seeds. Butterflies are near the bottom of the food chain from the animal point of view, as it provides food (especially in their caterpillar stage) for birds, mammals, and other insects.
Biodiversity is important because at 80 per cent of the needs of the poor and least 40 per cent of the world’s economy are derived from biological resources. Plus, the richer the diversity of life, the greater the opportunity for medical discoveries, economic development, and adaptive responses to such new threats as climate changes (Importance of Biodiversity, retrieved from: