I find the controlled ditching hypothesis less psychologically puzzling, not more, for at least three reasons: ego, agency, and practicality.
First, successfully ditching an aircraft at sea is the ultimate test of piloting skills, and possibly one difficult to resist for the ego of a seasoned captain on his final flight.
Second, it seems out of character for a meticulous pilot to just let the aircraft slip out of his control and crash haphazardly at the very end of a carefully-plotted sequence of murderous steps.
Third, a ditching would better obfuscate the final resting place of the aircraft compared to an uncontrolled dive, as it would result in fewer scattered debris floating away.
First, successfully ditching an aircraft at sea is the ultimate test of piloting skills, and possibly one difficult to resist for the ego of a seasoned captain on his final flight.
Second, it seems out of character for a meticulous pilot to just let the aircraft slip out of his control and crash haphazardly at the very end of a carefully-plotted sequence of murderous steps.
Third, a ditching would better obfuscate the final resting place of the aircraft compared to an uncontrolled dive, as it would result in fewer scattered debris floating away.