Re: Microsoft isn't so much evil as irrelevant to me.
I have no choice. There are no professional photo editing/management apps on Linux that are of good enough quality. Gimp is okay, but doesn't cover the end-to-end workflow in a way LR+PS or CaptureOne do. DarkTable is promising, but still a beta. You then have to consider support for printers, calibrators and colour management. These tools only exist on Mac and Windows and the current crop of Mac hardware sucks, especially the laptops.