Also a former motorcycle owner, and I used to switch the front brake on my bicycles to the right side too.

Motorcycles use a pedal for the rear brake, and a toe lever to shift gears. (At least they did in the 1970's). Japanese and Euro motorcycles used the opposite sides for brakes/shifter, so most riders who switched between bikes often had a scary moment where they braked with the wrong foot. Hence my motive for switching my bicycle brake lever.

I quit riding motorcycles long ago, and no longer reposition the brake levers on my bikes.