[grawprog]

>Fitting more on the screen horizontally.

But screens for the most part have only been getting wider. I could see this in the days of square CRT's but most screens are fairly wide these days.

[seanmcdirmid]

Reading a wide line of text is still hard visually, your eyes get tired from all the horizontal movement right and left.

Better to use the wider screen for multiple buffers of narrower code.

[mikekchar]

Another person posted something similar in the thread, but I'll reiterate: for people with poor vision, narrow fonts allow you to increase the font size, have a reasonable number of columns on the screen and have it fit into your field of vision. It's a life saver for me (usually coding at 24pt on a 13" monitor, which is as big as feels comfortable for me).