Thanks for sharing such nice little gem.
Most important reason is that I want to keep believing that a (bunch of) genius(es) inventing their perfect language that can be practically and widely used without a big company backing is still a thing
Secondly because these languages have so many great ideas with high quality implementations.
I know there are pockets of D throughout the industry. I know it's catching on at Facebook (and, because I know Facebook folks, I know what an uphill battle those folks are having too). I just don't hear about D nearly as much as I'd expect to over a decade in.
Nothing against D, mind.
IIRC, at the beginning the whole thing was not being developed in the open and the compiler was proprietary (although the front-end became open source at one point).
Those two things (especially the former) pretty much killed it for me.
D finally matured at a time where I was already more interested and invested in the Lisp/ML family of languages, thus I ended up never considering it for a project.
I do however find the imperative style of programming more efficient, when working with Haskell I always felt like I was fighting it. So perhaps Nimrod may not be for you, but it's still definitely worth checking out!
These days I'm dabbling with Go and while the toolchain is fantastic and the standard library is fairly comprehensive, I find the language itself to be "meh".
Rust-the-language looks much more promising but I'm holding my breath waiting until it stabilises before I consider it for my next project. I read elsewhere that they are striving for a near-final release at the end of the year so I won't have to wait long, after all :)
Keep it up!