How are the themes presented in The Great Gatsby relevant to our modern society?

Granted, many of the characters, notably Gatsby's party
guests, are materialistic and social leeches.  There is also the idea that the end
justifies the means.  Gatsby goes to any lengths to pursue Daisy, his "American Dream."
It doesn't matter to him, that pursuing this dream entails changing his persona (which
in different contexts is not necessarily bad), getting involved with criminals and
hosting parties for a bunch of phonies.  The deaths that occur in the novel, although
not intentional are the result of this mix between Gatsby's pursuit, Tom's infidelity
and some poor driving; all of which, even the last one, applicable today.  People want
what they want and in materialistic societies, they want it NOW. But back to my overall
point: Gatsby's "end justifies the means."  Think about these reality shows like
"Survivor" and others like it.  They are Machiavellian.  Each participant will do
whatever it takes to win; usually money.  Likewise with Gatsby.  This concept of the
American Dream trumping all other considerations of other people is definitely
noticeable today.  This actually comes from a (not to play politics, but) predominantly
republican view of capitalism where competition is the guiding hand.  The problem with
believing this view absolutely (believing only in this view) is that it ignores social
factors which clearly show that competition, in and of itself, is an fallible guide for
life.  Strict adherence to competition alone ignores social inequalities, economic
infrastructures and subsequently, ethical considerations.  Characters on these reality
shows are in it to win it, no matter who they step on.  Sadly, this can be the price of
success: the end justifies the means.  However, a more tragic end for Gatsby.  Still,
Nick presents Gatsby in a more favorable light.  At least Gatsby's in it for
love.