Hitler finally recognized that all was lost and did not want to be taken captive and paraded through the streets of Moscow.
He had seen how the Italian people hung Mussolini in a public square and heaped humilliations upon his corpse. He definitely did not want to suffer that fate. He could do away with himself easily because he lacked respect for human life.
Ummm, Hitler was dead. How could they possibly know what he was thinking. Did someone interview him at the morgue?