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.

I don't get all the criticism against us libertarians. All you do is provide flaws in the capitalist system, but giving no specific answer to them.
But we know there's only two answers... either the  government intervention or there's not. Now, you don't want to sound like a statist so you just leave your post like that, with a big question mark. And we don't have to give you an answer either, each problem is one in its own, and yes, some do require government intervention, I believe. Do all of them? No.
The principle is to have the LEAST government intervention as possible, not just remove the government completely. That's anarchism, you should know very well. Even though it's separated by a very thin line, libertarianism does include government to take care of some things.
What exactly? I don't know. Depends on the situation. That is completely debatable. But we don't want to debate real issues do we. Let's just be trolls and flame ourselves to death. Pff.
But I don't care, I rarely even lurk around this cesspit anymore. Just please, stop equaling libertarianism with anarchism, it's so annoying when I do come around and read this same old shit.