Most people think that we shouldn't care about other species when one of our own is starving over seas. In other words our species comes first.
To save an endangered species, it costs a lot of money. The money does not directly affect or help humans. There are a lot of financial issues facing the world.
We must get out of our way to save an animal and most people don't like to get out of their way to save an animal that has no affect on them on the moment. We like to live today and let others worry about tomorrow. We like to push our problems to the next generation.
Extinction is a fact of life. All animals will eventually be extinct. This is part of evolution and part of nature. It is normal for animals to be extinct. For example if the dinosaurs were still here today we probably would still be living in caves.