UX designers actually fought for this for ages. Like, at least since the 80s.
“Save the document?” is a stupid question: of course I want the program to preserve what I do. But I also need a way to roll back the changes afterwards if I discover a mistake.
I enjoy opening a photo in photoshop and just putzing around with filters and tools to see what they do. I expect it to throw away my changes unless I explicitly state I want to keep them.
Or you could just click “revert to the original” about the same way as you click “discard changes.” With the difference that your use-case is super rare whereas saving the changes is what everyone wants almost every time.
