Once upon a time, if you asked anyone which was the best photo editing software, they'd always say Photoshop. OK, so Photoshop is still the most powerful program there is at what it does, but what we want to do as photographers has changed.
Photoshop is not much good if you need creative inspiration – it can create any effect you ask of it, but you have to know what you want. If you need creative inspiration, there are better places to look.