Just by the nature of their design, motorcycles are engaging vehicles to operate. Modern motorcycles require the active use of all four limbs in a tactile experience of nuance and control. And they often lack the power or electronics to compensate for the rider's mistakes.
https://www.hagerty.com/media/buying-and-selling/coordinated-enough-ride-this-1928-bsa-s28/
https://www.hagerty.com/media/buying-and-selling/coordinated-enough-ride-this-1928-bsa-s28/
