One thing D does have in its favor over most of the competing alternatives is a fairly mature ecosystem story, with multiple implementations of the compiler, decent docs, libraries for common domains, and a lot of "use hours and eyeballs" on the project as a whole that have brought up and addressed obscure issues. While it has accumulated some more serious warts with time as the project goals have shifted in very large ways, D could be described as boring, useful, and mostly keeping up with the trends, which is a pretty decent place for a fundamental software development tool to be in. I'd be happy to use it again.