BWV 1007 is wonderful for several reasons:
1: it is relatively straightforward technically and, thus, accessible to many guitarists;
2: it is not profoundly difficult while being profound musically;
3: it demands (in the versions that hue closely to the 'cello originals; e.g., Yates, Wright) that one wring as much tone and phrasing as possible from the guitar;
4: it provides certain technical challenges (see 3, above) that can be applied to other music; &
5: it is a great addition to one's repertoire.
I recommend Jordi Savall's recording of the minuets and gigue, found on "Les Vois Humaines," for examples of phrasing which elevate the music beyond the mere notes, and regret that he hasn't recorded all the Suites.
In any event, a valuable entrance into the world of Bach that is rewarding, both immediately and over time, and which adds immeasurably to one's sense of music in all genres.