Originally Posted by
Oneder
For me the biggest against is worry about repetitive strain. Applying constant pressure to your feet and in the same exact location is great for efficiency but things like that are not so great for longterm joint health.
Do you have a source for that? Pedals with more restraint (toeclips, straps pulled tight and traditional slotted cleats have been used since 1895, often for the full cycling life of the rider with no apparent issues. (45 years and 150,000 miles to date for me plus another 20k on no-float clipless.)
Ben