Why exceptions for error handling is so important

[via Digitalmars-d]

On Wednesday, 14 January 2015 at 11:20:49 UTC, Marc Schütz wrote:
> Without addressing anything else: You want moving here, not 
> copying.

How can you move a value, it has no identity?

(Not that I really care much for Thread.join(). How many actually 
use it?)