I love riding mine (+brakes x2) for a change of pace, it's a different mental exercise than riding with a freewheel which makes it fun. It took a little while to get used to clipping in/out but I think it's made me better/smoother at that as well, particularly starting out from a stop.

I used to commute fixed, but then the commute got longer (22mi/day), and the fixie doesn't have an easy way to mount a rack and carrying a messenger bag with commuting gear that far wasn't making my back very happy. I still use it for local errands/bar runs/etc and do miss it commuting.