I love matte shadows. I think they give depth and sophistication to a look. If I'm doing an eye, I use at least one matte shadow, if not more, because too much shimmer just looks really flat and there's no texture to it. Shimmer shadows are pretty, but I think matte shadows are gorgeous because they're so unexpected. I think a lot of people find them to be hard to blend and that's why they're not as common as shimmery colors, but i think they're the smoothest to blend and when there's fall out, it's not as easily detected unless it's a darker color.