Give me a compelling reason why I should enable it.
It's not extremely important, but sometimes, I may not want to pronounce boldly to the world that I made a
slight edit, like a misspelling or something. With the option enabled, you can choose if you want the edit message to appear in your post or not.
I guess another question I was asking was if there was a particular reason the feature was
disabled. I'm pretty sure that this effects Members, but not Administrators, because I've seen Admins make edits without the message appearing. There isn't a very compelling reason to do it, but I'm not aware of a reason
not to do it, or why it wasn't enabled in the first place,