I'm glad to hear I'm not the only one - I loved using proportional fonts. I find my ability to scan words is much faster than with monospaced, and I navigate semantically and prefer automated refactors so that I never really felt the need for multi-cursor editing or aligned blocks.

All that came to an end when I worked on a project using F#. It just doesn't work with meaningful whitespace. In the current world, with the prevalence of python, I can't really go back unfortunately. Maybe indenting with tabs is the way after all...