By shear nature of us all sharing common heritage we are all essentially very similar. Our perceived differences are disproportionately exaggerated due to the fact that our similarities are overlooked as unintuitive.
To put it perhaps more descriptively, even with free will, I'm proposing that our personalities are due almost exclusively not to our conscious will or our genetic differences or our environmental variables, but to our shared genetic and biological history.
We revere people whose lives are different because they are rare. The rest of us make almost the same choices as everyone else. And personalities, as we see them in a jungian archetype sense, is no more a part of us as a role an actor plays in a film is a part of them.
Thoughts?