Why is libertarianism so infallible?

Libertarianism is the inclusion of every sapient being into the decision making process and all that logically follows from that. Utilitarianism is the objective of ensuring the most happiness for all sapient beings and all that logically follows from that. Sometimes they compliment each other, other times they contradict.

Discuss.

Not Jealousy, I'm just tired of the US messing up other countries for no good reasons (who helped Fidel in Cuba? who gave weapons to Saddam, to the Taliban?).

Why did the US go in Iraq? Because they were AFRAID Iraq MIGHT send nukes to the US. Even though most other countries said there was no menace to begin with (wich was later proven). Why do most US gun carrying people have guns? Because they are AFRAID they might be attacked. A courageous country? No, a fearful country. Nothing to be jealous about. And if I were you, I would not declare victory yet, the Bush admin did this and eventually came to realize it was a huge mistake.