Did you ever want to use a FET for switching your LED on and off?
Did you want to light the LED and you got turned down on the fly? libgpiod!
Did you ever want to know if you were moving while you slept?
Did you ever want to use another radio band to control your LED from a distance w/ an Xbee by way of push button?
Make GPIO easy and easier but do not try to make it a given...
Did you ever want to have a nice LED blink off and on while OpenCV recorded video from your WebCam?
Did you want to change from ARM to RISC-V Processing and did not know how to make the jump? BeagleV!