If you have to deal with city traffic, drops are definitely not ideal. Bullhorns are a little better for that because you can get pretty comfortable without dropping your head too far down. An upright position is always better when dealing with intersections, red lights and aggressive city drivers.

People seem to like fixed gears a lot for the looks, so that explains a lot of track drops in the street (I admit that I run track drops on one of my bikes), but comfort should really come first. Looks can only get you so far.