When I am in a hurry to do a spreadsheet, I call up Excel 97. Same with Word 97 when I need a word-processor. They are both easier to use than the convoluted ribbon menu in the versions that come with later Windows.
And because Microsoft no longer cares about it, installing it over and over with the same key on newer machines is a no-brainer.
I hate the ribbon. The old Office is a win-win.