I remember back in the early 1990's when this "Windows" thing was still a cool, new platform that everyone was experimenting with. One program that was considered generally useful was MS Paint, which allowed you to create simple drawings.
MS Paint hasn't progressed one bit since then. Actually, to give Microsoft some credit here - looking at Wikipedia, MS Paint hasn't progressed since 1998.
Under Linux, I often used GIMP for simple editing of pictures - photos, screenshots, etc. I certainly don't consider myself a GIMP expert, but I used GIMP once in a while to touch up a photo, create a graphic for my web site, or to highlight things in, say, a screenshot. You can do some pretty advanced stuff in the GIMP, but I never did much beyond layers and a few simple "canned" effects.
As an example: I once needed to give campus directions to a friend visiting from out of town. Google Maps didn't have campus walking directions, so I opened the university campus map, in GIMP. Cropping the image to show just the part of campus my friend would be visiting, I used the Paths tool to highlight the route my friend would take get to his destination, including passing through and around a few buildings. Using the GIMP was fast and easy.
MS Paint, on the other hand, is way too limited: you can hand-draw some lines, or add cheesy spraypaint effects that might have been "neat" in 1990. I can't even crop an image! That's a basic operation, and I can't do it. I guess the only way to "crop" in MS Paint is to make a selection, copy, then paste. But that replaces the image you're working on - you cannot have more than one image open in MS Paint, apparently. Lame.
I don't mean to compare a jackhammer (GIMP) with your basic sledgehammer (Paint.) I know that MS Paint is simple, not really meant for anything more than basic operations. Clearly, Microsoft assumes that someone who wants to do more than just basic image operations would pay $$ for a "professional" graphics tool like Photoshop.
But hey, the tool (GIMP) that is provided by default and for free with any Linux system is way more powerful than the tool (Paint) that's provided with Windows. I'm comparing default-tool to default-tool. Hands down, Windows loses!