[Defletter]

> D has a GC and it’s optional.

This is only true in the most technical sense: you can easily opt-out of the GC, but you will struggle with the standard library, and probably most third-party libraries too. It's the baseline assumption after all, hence why it's opt-out, not opt-in. There was a DConf talk about the future of Phobos which indicated increased support for @nogc, but this is a ways away, and even then. If you're opting-out of the GC, you are giving up a lot. And honestly, if you really don't want the GC, you may be better off with Zig.