[atoulouse]

At the risk of being flamed, I want to state that I think GIMP is worse. I have no objective evidence, though; it's all subjective and anecdotal.

I started with Paint Shop Pro, and what it lacked in features it made up in ease-of-use. I especially liked the ability to mix raster and vector layers; Photoshop still hasn't captured the simplicity and power of PSP's vector layers, IMO (in terms of UI, at least). After I used PSP, I moved on to Photoshop. While it was initially a bit intimidating, my familiarity with PSP quickly helped me overcome this and I was up to speed pretty fast. Fast forward a long time and I try Corel Painter. Its interface is definitely different, but still easy to follow. I picked it up in a few minutes (for some definition of 'picked up').

Then I tried GIMP. I couldn't make heads or tails of it, and I never got used to it. I can't explain why GIMP doesn't work for me; just that I didn't -- couldn't -- pick it up like I did Photoshop or Painter (or openCanvas for that matter).