Spreadsheets are used for _waaaay_ more than just finances. I don't think it's anywhere near 50% finances. I can't recall where, but I saw a study from I think the 90s saying most of the spreadsheets they found were being used as Todo lists.
Maybe like 1 in my past 2y of many, many spreadsheets has been financing related. I think you might be overgeneralizing to an ungeneralizeably large group -- the set of all human spreadsheets.
I don't remember where I read this (and my summary might be off) but the computerized spreadsheet is a great invention because it's a programming environment for non-programmers.
"I need to input a number of variables and find their sum and average [or even more]. And I need to see how the outputs change if I change an input...".
Maybe like 1 in my past 2y of many, many spreadsheets has been financing related. I think you might be overgeneralizing to an ungeneralizeably large group -- the set of all human spreadsheets.