But the UX is just a lot worse, and it isn't easy to go from one application to another because they're slightly different enough that your productivity takes a hit from all the small papercuts.
I'm waiting for some FOSS spreadsheet solution that doesn't just try to copy Office, but comes up with something better. Then it'll feel like it's worth it to learn a whole new program and its UX, rather than just suffering through it because you wanna use FOSS.