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.

>>"5
Strawman pls.
state socialism ≠ statism

While I don't expect you to disprove everything I've said, you could at least provide an example of one issue you have supposedly disproven me on.