Windows 7: how do I bypass the "save file" prompt

Dozens of times per day I use mspaint to look at a graphics file, make changes to it, and then want to quickly exit without saving my changes. Right now I always have to click "don't save" after clicking on the exit button on the upper right (see attachment).

Is it possible to avoid this prompt, and have mspaint exit without prompting me to save changes?

Why use paint? Why not use the viewer?

I use the drawing and editing features of paint. Hoping someone can answer my question. Thanks

My guess is the prompting is there to save your bacon just in case you want to save something.
It will do that even if you make one adjustment or move an item and don't like it.
You should be happy it prompts you!