In what ways could Chris McCandless be considered rebellious?

Chris McCandless is the definition of rebellion.  His
spiritual or emotional awakening, for lack of a better term, has led him to basically
quit society.  He donates his college fund to OxFam, abandons his car, burns his money
and ID cards, and turns into a wandering and completely independent man.  Can you think
of anyone else who has ever done something similar, and in the mannerthat McCandless
did?  Neither can I.

He liked to live off the land, or try
to.  He liked to be adventurous for the sake of adventure.  He walks off into the
Alaskan wilderness just before winter--into the wild, as it were--woefully unprepared
for what he is about to face, and this unpreparedness is, in the end, what kills him. 
So, in short, there is rebellion in almost everything he does.