Windows Paint. It's on every windows computer since Windows 3.1, I believe.
Oh, yes. That one. (D'oh)
Yeah, my son (the Gamer) loaded Gimp onto his old computer after some updates before he gave it to me. I couldn't figure it out, and didn't see why it needed to be that fancy. I also tend to not need to crop my digital pictures, having learned to frame a picture pretty well with a 35mm film camera.
It needs to be that fancy for more or less the same reason that a milling machine needs all those knobs and buttons. If all you've ever needed was a drill press, that milling machine is way too fancy. You can do anything
with Gimp, including starting from a white background and hand-making a picture. If all you're ever going to do is resize, it's way too much.