Basically they are all the same. This holds true for the cosmic body too. We are all important as the cells of the human body. There is certainly no birth and death but a constant transformation of forms. A constant recycling.
Physics clearly mentions that the laws that hold good for the atom also hold good for the cosmos.
Hence the above argument is not philosophical but rather logical as science is. The body wants to get rid of a cell that doesn't co-operate with the body. The body wants to destroy a cell that doesn't obey the rules of it. Body doesn't want a cancer cell, simply because it is dangerous for the body as a whole. Nature also feels the same with us.