Why Libertarianism is worthless.

1) There are no first-world libertarian nation.

2) Libertarianism led to the Great Depression.

3) Libertarianism leads to vertical monopolies

4) Every country that started out with unchecked capitalism either made a transition to regulated capitalism (US) or completely collapse (Somalia).

5) In order for Libertarianism to work, everyone needs to participate and do everything just right. Even the slightest mistake will put you at a disadvantage for the rest of your life. Guess what other political ideaology have the same requirements? It starts with a "C" and ends in "ommunism".

6) Did I mention that there are no first-world Libertarian nation?

"1) There are no first-world libertarian nation."

The USA is one of the more libertarian countries of the world.  Also, other countries that exhibit certain libertarian principles have displayed great success - such as the nation of Hong Kong.  They don't have large amounts of resources there, yet their economy is quite successful, and there is a huge degree of economic liberty there. 

"2) Libertarianism led to the Great Depression."

No, stupid government programs created the Great Depression. 
http://www.mackinac.org/archives/1998/sp1998-01.pdf