How does Byron describe Don Juan?

Byron's epic poem, Don Juan, addresses so many issues that it is difficult to narrow the scope of the poem to just one or two. Is the poem an attack on what was current Romantic Era ideology? Is the poem about love and romance? Is it primarily social commentary? Is the poem a description of the Fall of Man? Could it be Byron's own attempt at self therapy? Does the poem hold to a specific world view and if so, is it inherently nihilistic or is the poem actually a moral poem endorsing traditional principles? What, finally, is the poem about? These questions, and more, are some of the relevant issues raised when analyzing Don Juan. As it is certainly likely that Byron is rebelling against stringent Calvinistic principles, it would be remiss to construe the poem as part of the "Either/Or" Syndrome (positive/moral-negative/nihilistic, good/bad, cold/hot, heaven.hell, et cetera). Rather, the poem is a manifestation of Byron's own existential frustration - a complex masterpiece therapeutically exercising human angst and effectively addressing all of the previously mentioned issues. And unlike the angry existential philosophers who follow him some years later, Byron's existential vision is a theistic one: a vision comprised of isolation and loneliness while encompassing a compassion for humanity as a greater whole.