clipless pedals allow one to optimize the contact patch between foot and pedal. they eliminate unnecessary movement and can decrease foot and knee pain for many riders. they also encourage the development of cadence and track standing skills. many cyclists in denmark and the netherlands would be better cyclists if they road clipless. it's kind of sad that two of the bikiest nations in the world are largely stuck in the victorian era when it comes to cycling technology. heck, i'm surprised that the dutch don't still use clogs when riding their beloved oma/opafiets.