This is a reach, but hear me out...
I have played on many game consoles; Sega Genesis NES, N64, Gamecube, and more, but one thing seems to be in common with me and these controllers. Usually for platform games such as Donkey Kong Country and Super Mario, one button is for jumping and one is for running. I literally feel like I HAVE to keep a hold on the running button, even if I am doing actions in the game that do not necessarily require running. On a NES Controller, for example, I would hold the B button and just use the A button when needed. Is that normal or is that just me?