1. They help us breathe.
Forests pump out oxygen we need to live and absorb the carbon dioxide we exhale. A single mature, leafy tree is estimated to produce a day's supply of oxygen for anywhere from two to 10 people.
Forests are homes for many animals. Almost half of the known species on earth live in forests. There are also many animals that are almost extinct living in forests such as the apes, and getting rid of their homes wouldn't be good for them.
15. They feed us.
Not only do trees provide fruits, nuts, seeds and sap, but they also enable a cornucopia near the forest floor, from edible mushrooms, berries and beetles to larger game like deer, turkeys, rabbits and fish.
No more game hunting.
If all the hardwood forests where replaced with pines, us hunters would have to give up on hunting. If there were no hunters Victoria would have a overpopulation of wild deer and pigs.
Deforestation of the Amazon rainforest accelerated significantly between 1991 and 2004, reaching an annual forest loss rate of 27,423 km² in 2004. Though the rate of deforestation has been slowing since 2004 (with re-accelerations in 2008 and 2013), the remaining forest cover continues to dwindle.
Deforestation of the Amazon rainforest can be attributed to many different factors at local, national, and international levels. The rainforest is seen as a resource for cattle pasture, valuable hardwoods, housing space, farming space (especially for soybeans), road works (such as highways and smaller roads) and medicines.