Another Micro advocate! I agree, it's also my go-to editor. It's a great halfway point between breaking out Emacs and resorting to Nano. Micro is dead-simple and gets work done without any complication.
In Micro, selecting text using shift with left/right arrow works (across lines too), but is there a way to make it work when you press up/down arrows? And how do you shift select to the end of the line?
Thanks, hmm, so shift up/down deselects anything that was selected for me. Shift left/right works and mouse select works. Shift+fn+left/right makes me switch tab. I'm guessing my keyboard shortcuts are different compared to your setup but I don't remember changing anything here (using the regular Terminal app for Mac).