What is the use of unchecking "resampling" in photoshopCC PS?

There's really no point in not printing it.

A picture has two kinds of information: display size and print size. The display size is its actual pixel number, for example, 100* 100px. This picture actually has the size of 10000 pixels, which is meaningful for the screen, no matter how big it is on any screen, but different screen resolutions have different sizes.

The print size is called dpi. You can open a picture in jpg format at will, right-click and you will see a dpi value. The larger the dpi, the clearer the printed picture will be. So, if it's 100* 100, which is clearer, one inch or five inches? The smaller, the clearer.

Now the answer to the question comes out. If resampling is unchecked, the number of pixels will not change, so the size you see on the screen will not change, but if you increase the height and width, it will actually increase its print size. Pixels remain unchanged, but the actual printable width and height increase, and the resolution (dpi) can only decrease.

For example, if you make a picture, you need to print it out and put it on the computer. If resampling is checked to improve the resolution, the number of picture pixels on the computer will increase synchronously, and the visual size will be very large, which is inconvenient. But if it is not checked, it will not change visually, and the actual printable resolution can be adjusted at will. Is this experience good?