The accounting software we use (which does NOT run under WINE, despite many hours trying to make it so) and Irfanview are my sole remaining reasons. At home everything is some flavour of Linux.

Also the lack of virtual filesystem support for Nextcloud is a secondary factor. Important as my Nextcloud storage is significantly larger than a reasonably priced SSD. I believe it’s technically available in a bit of an alpha stage under Linux now though?