That is not the default position, it's a product of religious indoctrination that still cannot give up the concept. No, the Bible for instance installs us as stewards and caretakers of the Earth. It's a hierarchy with God at the top and us the next ones down. That's why evangelicals drive gas hogging SUVs and don't care. On the other hand, if we are here through a series of unusual natural circumstances, our position in this world is not guaranteed, and more caution is called for.