Humans are just barely in the habitable zone regarding the Sun...like believing the Sun revolved around the Earth (for which people were torture and killed to say otherwise) and that we are the only life form in the universe (which still gets you laughed at), here is one more example that we are just a small part of the picture. The picture is not about us, we are not exceptional. That is an adolescent dream.

http://www.nature.com/news/earth-is-only-just-within-the-sun-s-habitable-zone-1.14353