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.

>>213 Deficit spending means taking on debt. When a government takes on debt, the debt is socialised. Tax payers will pay the debt. I'm not crying you idiot, I'm pointing out the facts. In governments today, both the left and right favour socialism on many issues. I believe this is because socialism tends to be popularist and politics has been reduced to popularism all over the world.