On the subject of benefit

The actions of people in todays world seem to be based on two basic hypokeimenons. Actions that benefit us, and actions that benefit others. The cutting down of forests to make paper, the injection of plants with pesticides and the mass production of cars for example all benefit "us". We need paper to write, plants for food and cars to help us get around. All of these things are done in order to help us write, get food and get around more efficiently. Other actions are done to benefit others. Numerous organizations provide relief to impoverished areas in Africa, volunteer shelters provide homes for abandoned pets, protesters block off deforestation zones and the government is starting to take action against global warming. The relief to Africa does not benefit the people doing the job directly, but benefits the people in Africa. Shelters help out abandoned pets, not "us". Deforestation protests help preserve the rainforest, once again not "us". And finally, reducing the effect of global warming will help generations in the future, not the people of today. No other animal on earth has this ability to benefit others. Animals seem to simply try and benefit themselves in the best way possible. In Aristotle's terms, moving towards a conservation of form is the definition of natural. That is what all the animals seem to be doing. They benefit themselves in order to conserve their form in the best way possible. So are we as humans not doing the same thing? By cutting down forests and injecting pesticides into plants, are we not trying to find the best way to conserve and advance our form? The actions that humans do that benefit others, then in a way become unnatural. By trying to stop global warming and reducing deforestation we are limiting ourselves from doing what benefits us the most right now, unlike every other animal. Or the endangered species act. Preserving endangered species does not really benefit us, but we do it anyway. Nobody would help these endangered species if it wasn't for us. "Nature" surely wouldn't. Mammoths, sabertooth tigers, they all went extinct. So does this prove us to be unnatural? Why should we not simply do what every other animal does, and just benefit ourselves?