How does Jon Krakauer see himself as similar to Chris McCandless?

Throughout Into the Wild, Krakauer mentions that he feels a sort of familiarity and kinship with McCandless. On a straightforward and concrete level, both men decided to go out alone into the wilds of Alaska at a fairly young age.
Another similarity between the two men is their "skewed" relationships with their fathers. While in college, McCandless became more and more disillusioned with his father. The result was that McCandless began to distance himself from his family. He grew an aversion to his father's money and financial support. Consequently, McCandless ended up donating a great deal of his college money to a charity. Krakauer doesn't go into deep specifics about his relationship with his own father, but he does admit to readers that he feels a bond with McCandless because of this father issue.

But I believe we were similarly affected by the skewed relationships we had with our fathers. And I suspect we had a similar intensity, a similar heedlessness, a similar agitation of the soul.