The characters we use to interact with our computers were mostly designed to be hand-written and minimize the amount of movement your hand has to make going from one letter to the next. I theorize that they don't translate all that well to existing display technologies. Not so much because of the shape of the fonts, but because format isn't conducive to sharing or receiving information as quickly as our machines and our wetware could allow.
If you think about this a little more, programming is actually a way to overcome the limitations of spoken/written languages to an extent, since the machine can parse the text faster than you, and it can read other forms of data that are even more efficient. In my view a monitor displaying human-readable text is similar to a legacy ABI that's kept around because of the technical momentum and mindshare it has, not because it's particularly good.
If you think about this a little more, programming is actually a way to overcome the limitations of spoken/written languages to an extent, since the machine can parse the text faster than you, and it can read other forms of data that are even more efficient. In my view a monitor displaying human-readable text is similar to a legacy ABI that's kept around because of the technical momentum and mindshare it has, not because it's particularly good.