Hot Exit keeps unsaved tabs open and is not asking to save them if you quit the app. On the next start the unsaved tabs are re-opened again. It's handy if you're using the texteditor as a scratchpad. Usually i make my notes in just opened/new tabs. But I don't want/need to save them. That's the resaon for me.
Much agreed on this - being able to close the app with the standard Windows X or system icon menu, and have that trigger a hot exit would be awesome. I've remapped alt-f4, which works, but just reminds me how little I use that vs. the Windows close button.