music its fullness, rhythm and tempo. Without bass, music sounds tinny and causes listening fatigue.
Second, ceiling speakers project their sound into the floor not the room. If you stand directly under a ceiling speaker, you will hear the treble well. Step to the side a few feet and treble instruments like cymbals, triangles, tambourines, snare drums, etc. will almost disappear.
Wall speakers project into the room but not uniformly. When you are standing next to one of the speakers, the music is too loud while on the other side of the room it is not loud enough. The room has hot spots and dead spots.
Third, from an aesthetic standpoint, the speakers are ugly, break up the smooth lines of your ceiling or wall and limit where you can place pictures, mirrors and wall hangings. We have a better sounding and more attractive solution. Your lovely home will have exceptional sound and people will ask, "Where did you hide the speakers?"