Thank you. Well, I recognize the reality that human nature is broad. It takes many forms. It is not that I am more optimistic in the sense of thinking it is fundamentally really good, no. I am optimistic in the sense of recognizing that it CAN be better, FAR better, and that it can be way, way, way worse. I am realistic in the sense that I don't assume away possibilities, nor do I assume away things I have seen in myself and other people, the compassion, the rationality, the long-term thinking, the deduction, the care. And with economics I can see that even when people are irrational or don't care, they are handled and limited by the market. I am aware of reality. I am aware of my limitations, so I don't assume to be right unless I am damn sure.
Frankly your pessimism and rhetorical support of non-libertarian means comes across as irrationality to me. I do not hope. I reason. And I've reasoned this stuff through to my satisfaction that it is attainable, and that the most effective means of effecting it are to live it, and create a culture around me that embraces the core principles of respect for consent, rationality, uncertainty, value for one's own life, and the understanding of the self-evident truth that there is no such thing as authority. Any culture holding onto those truths will succeed. It is why Sikhs and Jews tend to do so well at accruing wealth and value self-reliance.
That being said, you have some good points and I like to debate. Doing so helps to point out where I'm making a mistake, either in logic or at being convincing haha! And I like to debate in general. So thank you!