What is the irony in McCandless leter to Ron in Anza-borrego?

In Chris McCandless's letter to Ron in Anza-Borrego, the irony lies in his expression of gratitude for Ron's kindness and his desire for independence, which ultimately leads to his tragic fate. While he seeks freedom and adventure, his romanticized view of solitude contrasts sharply with the harsh realities of surviving alone in the wilderness. This juxtaposition highlights McCandless's naivety; he longs for connection yet chooses isolation, ultimately undermining his own ideals of self-reliance.