Raw format is just that - totally unprocessed, unlike Jpegs which are compressed by the camera.
With the Raw format there is a plethora of things that can be done to correct/improve an image, such as altering the white balance to get as accurate an image to what was seen when the image was shot. There is also greater control over the shadows and highlights in Raw format than there is with Jpegs.
Let's face it, there is rarely a time when the shooting conditions are perfect and by shooting in Raw the photographer has the opportunity to correct those imbalances.
When is any adjustment is enough? That is down to the photographer's personal taste. Only you can know what the scene/subject looked like, but the aim is to produce an ascetically pleasing image with impact. Will any body else like your edits? If they don't, then stuff them. If you are pleased with the edit, then that's all that matters.
I think you need to study and understand what your camera does when you press the shutter release, as it measures each image as tonal values, shown in the Histogram.
Will give you a very good idea of what I'm talking about, which includes tones and curves.
Noise in an image can be distracting, certainly with a blurred background - reducing it either in camera at the point of shooting or in post processing will usually improve the overall quality of the image.
Hope this helps.