Vision for the D language - stabilizing complexity?

[Shachar Shemesh via Digitalmars-d]

On 16/07/16 07:24, Walter Bright wrote:
>
> Since casting away immutable/const is allowed in @system code, yes, I am
> referring to @safe code here.
>

That is something without which none of your arguments made sense to me. 
Thank you for your clarification.

So, would you say you shouldn't use D unless all of your code is @safe? 
Most? Some? None?

Shachar