I like programming in D. And I think that it can exist in a world with Rust/Zig/Go/blub. My personal opinion/pitch for D.

1. I found D pretty easy to learn and use so getting productive in it was easier for me than Rust.

2. D has a lot of improvements to C++ that make it more ergonomic (no header files! built in package management!)

3. D has a lot of flexibility to go up and down the stack in complexity as well as interface with existing c/c++ code.

  a. Need to use d for scripting like Python? use Rdmd

  b. Need to interface with c code and can't depend on the D compiler? use -betterC ^1

  c. Need a quick and dirty way to use C code without creating bindings? use importC

  d. Can't use the garbage collector? use @nogc

  e. Need to interface with C++? use extern (C++)

D's flexibility is its greatest strength and weakness. It can do a lot of things but not all of its features are ergonomic. A lot of that just has to do with man power. If it had a community as large as C++ things would be different. Using the examples in 3, you could use Ds features and write a kernel with @nogc, a user interface for that kernel using regular D, and create build scripts using rdmd.

To see a c++ person perspective on D watch this video^2

1. https://wiki.dlang.org/D_on_esp32/esp8266(llvm-xtensa%2Bldc)...

2. DConf '22: Ray Tracing in (Less Than) One Weekend with DLang -- Mike Shah https://www.youtube.com/watch?v=nCIB8df7q2g