To be honest, I find Photoshop to be not so good for many use cases. Gimp is not ideal, but I use it much more often. Like alpha channel editing? Absolute nightmare in Photoshop. In gimp it is just another channel and I can apply curves or other effects directly to alpha channel. How about ability to save/not save color info for pixels with 100% transparency?

Or saving image where Photoshop often does not remember from where the file was opened, or that I have to manually select a file type from a drop down. In gimp, just type the extension. I also like scripting and automating using python.

On the other hand, Photoshop excels in layer effects. In gimp, these effects are applied and you cannot mutate the underlying layer (like change text with shadow and bevel).