On the space shuttle, I understand that the quick roll and pitch maneuver wins because it increases payload, aligns antennae, etc.
But if one looks at the Apollo missions on a Saturn V, why is this necessary?
According to Wikipedia - and recordings from the time - the Saturn V rocket (1) first did a movement of some 1.5 degrees or more to clear the launch tower, and then, quickly (2) did a roll and pitch maneuver to "align" it with its intended orbit.
But why should a symmetric spacecraft require this sequence? which way the heads of the astronauts faced seems irrelevant. One should, it would seem, be able to capture the earth's rotation as a benefit without requiring 2 moves.
Put another way, rotation about the axis of symmetry of the rocket seems unnecessary. So, why was it done?