Non compile time evaluation for initializers

[Steven Schveighoffer]

Is there a good reason why the compiler does not allow non-CTFE initializers 
for non-const variables?

For instance, this does not work:

Logger log = Log.getLogger("test");

but this does:

Logger log;
static this()
{
   log = Log.getLogger("test");
}

But why is it necessary to prevent the first from compiling to the 
equivalent of the second?  As far as I'm concerned, it's OK if it doesn't 
evaluate at compile time.  And it's much more convenient to write the first 
version when you are setting up global or static variables instead of using 
the static this() form.  In my mind, CTFE is a form of optimization, one 
which I can live without if it's not possible, but I still want to be able 
to compile :)

-Steve