Bingowings said:
When I was a kid I imagined that Han's idealised older brother was a Jedi killed in the Clone Wars leaving Han to be raised by Chewie.
He seemed very dismissive of the power of the Force and the chances of the Rebels, beyond natural skepticism and I pictured it came from some Freudian trauma.
I got the impression that his attitude is sort of the norm at that point (ANH). There are repeated references to adherents to "the Force" being out of step.