Today I did my first advanced spreadsheet on LibreOffice after switching to Linux, and it handled itself pretty well. I had to search for some features on the web at first, but after I got it down, I felt comfortable using it. Also, LibreOffice’s default menu layout is not pretty, but I can find all of the functions with just a click, unlike MS Office’s ribbon menu where I had to click around to find what I was looking for. Sorry for bad English.
Yeah, so you do use them, so you get it. Just most people use spreadsheets cause they know it and seem simple to them ! For me, I try to not use online spreadsheets for personal financial stuff. I only use online spreadsheets if the project has meaning in being shared. I quite like grist for this, really handful tool