My standard position is that GNOME is good, if you want to just use an existing workflow, whereas KDE is good, if you're looking to create your own workflow or you're fine with a mediocre, familiar (Windows-like) workflow.
But unfortunately, GNOME is really disappointing in some ways. Every so often, we have someone at work accidentally using it, because it's the default, and they always run into the same nonsense, like not being able to type a file path into the file manager, or not being able to give a name to the file they're trying to save. These are pretty bad problems that normal users are quick to encounter. It's a mystery to me, why these can't be fixed, but ultimately I just tell people to install KDE and they've all been happy about it.
I mean, as someone who hasn't encountered these same issues as you, I found btrfs really useful for home use. The snapshotting functionality is what gives me a safe feeling that I'll be able to boot my system. On ext4, any OS update could break your system and you'd have to resort to backups or a reinstall to fix it.
But yeah, it's quite possible that my hard drives were never old/bad enough that I ran into major issues...