Mostly because I have to do way too much clicking to see things in the column view. Columns are usually too narrow. Then you have to scroll horizontally to get to see your files. Search is slow. Open windows are kinda-remembered, but not always, it seems. And I'd like some folders to be sorted by date modified (downloads, anyone?) and most others by name. Then there is no quick "fuzzy find in a subtree" fzf-like functionality. I mean, compared to the Windows garbage this is better, but it has seen little love over the last 20 years or so and it shows.