Why the Chromatic Scale is so important and so overlooked?

The chromatic scale for guitar players is simply playing all of the notes in any string from its open position to its 12th fret.  So, 12 notes plus the repetition of the root makes it a 12 note scale or the major scale plus 5!

First and foremost, this scale is so important since all of the other scales used come from it.  The chromatic scale is the godfather of all of the other sequences that come from it (major, minor, augmented, diminished).  So, knowing this well will give you a command over the rest of the musical alphabet.

Second, it is greatly overlooked since it sounds pretty weird to our ears and there is really no sense of tonality.  The ear will need to hear resolution at some point and the chromatic scale has to be played with a plan in mind in order to get such resolution.

But, a good command of it sets the foundation for good musical  training!