I used GIMP just today ... for paid work! ... on a Mac. Granted it isn't a full-fledged replacement for Photoshop, and I do have an Adobe CC subscription, but

I used GIMP just today ... for paid work! ... on a Mac. Granted it isn't a full-fledged replacement for Photoshop, and I do have an Adobe CC subscription, but some things are simply faster and easier (for me) with GIMP.