#cannot optimism anymore

Shall I be fatalistic, And find that everything, Has a definite purpose? And drawing on that, Argument, See that everything, That does not, Should not exist? Or can I argue, That things evolve, Evolve for reasons, Rooted, In History. And are archaic, Not due to to logic, For logic will fault anything, And prove anything; Depending on prevalent culture, But due to time. The conclusion, May be the same, But the argument, Is slightly different. And there, Lies my pessimism, Against the optimism, Of this wonderful book