Apparently I'm one of the two users of proportionality spaced fonts for coding. I've used this now for five years and I don't understand why developers still see this need to code as if monospaced terminals is all that's available. Especially on large screens with high dpi it reads much faster. It also makes it less awkward to use editor unicode substitution for display purposes.
After programming in SmallTalk for a while, I'm starting to come round to a similar point of view. I haven't quite made the leap in my day-to-day work yet, but I really am considering it. Another thing I'm considering to adopt from ST is dropping syntax highlighting. If research on highlighting for natural language can be transferred to code (I'm not entirely sure, but I suspect it might), highlighting might actually…
I've tried to look at code without highlighting and I can't read it because the color gives me additional context (metadata?) about the code.