I was reading an article on some site in which the author was commenting on people taking a look at the image in the camera's monitor. My impression, perhaps wrongly interpreted, was that the article stated that it was unnecessary to do so.
I am a tyro, and I do think that it is necessary. Just think of the very large number of variables or settings that one can make with the D7000. So when I create new settings for my camera because I wish to discover what those settings will do, I have an expectation of what the image will look like and I will then compare my expectation with the actual outcome. I am in the process of learning how to use my instrument to the best possible advantage. I bought this camera to be more than just a "point and shoot". Hence I create settings, capture an image, forecast what I think the image will look like and what it is really like. Had I done that when I was using aperture setting immediately post sunset, I would not have had grossly underexposed pictures. The feedback would have been immediate and I would then have been able to immediately correct my mistake. "Chimping" is good.