>>3415512Exposure is largely personal preference. You can aim to get an "accurate" exposure, mimicking how the scene appeared to the eye (which would require a middle grey point in the scene to select in the processing software) but you can choose to under or over expose the shot if that's what you want.
Pic related would appear to be way under exposed if you're looking at just the histogram (the composition of the scene, being mostly dark, also contributes to that) but it looks how I wanted it to look. Of course it's how I want it to look according to my monitor (which is set to the default brightness which I believe the monitor was calibrated at), if someone else wants to increase or decrease the brightness of their monitor I have no control over that. For you, if you're wanting to share your images with other people, it may be a good idea to reduce your monitor brightness when your processing images.
If you're printing images then you then have control of how the image appears to other people, and in that case you want your monitor calibrated to your printer (or printer calibrated to the monitor, I don't use one so don't know how that works).