I've been there, the problem is that replacements are not as versatile or "floppy". But that's also a good thing, because Excel is too versatile to the point where most workbooks are filled with bugs on top of bugs and nobody cares.

Yes, bugs in sheets are worst part of excel, by far.

But many end users prefer dealing with bugs than with inflexible software that doesn’t understand all the different ways how real world is messy and hard to model.

I hate using Excel. But I 100% understand why world runs on it.