I think Han comes across as pretty jaded a lot of the time. I'm trying to remember - is it ESB when he makes a comment about shipping out, and a rebel general agrees with him that "it's hard living with price on your head?" I'm curious as to what extent Han ever really committed to the rebellion, as compared to expanding his personal version of loyalty to Luke and Leia, and accepting that the rebellion is a third party that comes along with them?