I feel like a large reason for that is that D is a properly boring language and I mean that in the best way possible. I have yet to be unpleasantly surprised by

I feel like a large reason for that is that D is a properly boring language and I mean that in the best way possible. I have yet to be unpleasantly surprised by D in the way other languages seem to be specifically designed towards. While this makes D a deeply pleasant language to use, it also makes it tough to sell. It doesn't have any whizz bang features you can get across in an elevator pitch.