Different exposures can produce shots that all work in different ways.
Taken to show the interior while making the outside to bright to distinguish anything
Taken to show the interior in shadow while keeping the detail clear outside the door. Natural draws you to the outside world and the light.
This is the best of both worlds shot, the shadows aren't too dark while it doesn't appear to light outside thous losing the detail.
In evenly lit scenes their is generally one 'correct' exposure meaning if you took a number of different exposures from light to dark most people would pick the same one as looking best.