Answer:
They're free.
They require minimal training so they're easy to figure out
Spreadsheets are difficult to share internally.
Spreadsheets are easy to share externally.
There's no clear indication of who's working on what when.
Multiple versions of the truth so you don't always have to stick with just one
Errors, can be everywhere but they can be solved
Step-by-step explanation:
My explanation is that spreadsheets can be confusing but when you take your time and get help working on them they can become 2nd nature. I got my ideas from personal experience with them with help from teachers.