I used to use PS back in the day... I had no idea what I was doing. You press a button, and there it is. Whoa, skill.
Then I started using GIMP. At first it was a bit of a mindfuck, but once I got used to it I actually started liking it far more than PS.
Besides, back when I was still in shape I could easily make a decent siggie in 15 minutes with GIMP.