Why use Manual Exposure Mode on your DSLR or Mirrorless camera?

Why bother using Manual Exposure Mode, surely the camera does it all for you anyway, erm... not really, no!

Manual exposure mode allows you to set your aperture, shutter speed and ISO without the camera automatically changing any other settings. It's the preferred setting for many professional photographers.
There are various reasons why it's sometimes very useful to use Manual mode instead of one of the other semi-automatic modes like Aperture or shutter speed priority.

When taking several shots of the same subject or within the same lighting scenario, why allow the camera to set the exposure for every single photo, the light isn't usually changing by the second, is it?

In this video I concentrate on the consistency of exposures when using the Manual Exposure Mode.