Because entry for repetitive data in a Spreadsheet is blazingly fast, mouse-free, intuitive, and easy. (Until you get to the “save as CSV” and Import that file into Gramps. That’s where the ‘easy and intuitive’ breaks down.) see CSV template for Text Import
A spreadsheet lets you be certain that ALL the family members queued up in a single place without spawning layer-upon-layer of popup dialogs.
If you do the 3 generation data-entry test (that @ed4becky does in his Genealogy Showcase video) in the Gramps interface, that’s 3 Families (plus 3 marriage Events and 3 children relationship-to-parents), 7 persons (plus 14 events: birth, death) plus 17 Places. That would be 47 dialogs!
And possibly nearly double that if you choose citations for all of those.
But I can fill in that information in less than 5 minutes in a spreadsheet… including a sole source for them all.
In the spreadsheet below, all that a person needs to fill in are the Yellow fields. The light green (Places) are helpful
