Why study the environment?

Climate, weather patterns, flora, fauna, and esthetics can affect the environment we live in.  However, the major concern is the safety and security of natural disasters.  The quality of the air we breathe and the water we drink is also important to us.  The important question is, what do we do with our stuff?  Garbage, rubbish or trash as our stuff may be called when they no longer serve a purpose in our life.  What does it say about us?