I have used PS for 15+ years mostly for photography work. I would not describe myself as a power user but so far I like it. The biggest advantage PS has over anything else (including GIMP) is training, the Adobe ecosystem has so much rich training out there. Most of what I need I have found in Affinity Photo and it even does some things better. The interface is similar to PS that a transition is not too difficult. The app is still at 1.5 so I'm sure there are features I will find missing at some point.