Most, if not all, of the reasons mentioned make total sense.  I guess I never thought of it in so many different ways.  Insecurities, selfishness and the idea of us living in a disposable society is a sad fact.  
As hard as it is at the moment to think that the next one won't do the same thing, I still have a little faith in humanity.  
Thanks for everyones input on this, I really really appreciate it.   
