And now you need to install and learn 10 different programs instead of one. Excel is used a lot because you can do so much with it which is also one of its downsides when people build things with it they really shouldn’t.
Also, input and output shouldn't be allowed to be mixed by design. Data in one sheet, and formulae output in another. And no automatic parsing should be done, ever. Remember Excel with Genomics, or the issues mangling dates. Or worse, locales, which are another issue under Unix.