Purchased mainly for indoor portraits and secondarily for macro use, this lens has far exceeded expectations and become my favorite and most use lens. Fast enough for most uses, good focal length on a 1.6 crop camera, wonderful background blur, and incredible macro abilities.
The only thing less than ideal for me is how close you need to get when shooting 1:1 macro. More space would be nice, and other lenses allow that, if that is your primary use.
I cannot imagine a more versitile prime lens. My zooms stay in the bag.