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.

>My only shock is that there is a person in this planet who can believe something this retarded.

No, in Turkey we have a guy who says everyone else is secretly socialist. His other well-known opinion is that offside should be removed from football. Needless to say, no one takes him seriously, and during elections his party tends to receive the least amount of votes (which is not much, as there are hundreds of parties here). But that, apparently, is a communist conspiracy against him.

Also, >>91