For better or worse, the US is not Germany. Comparing the two won't necessarily be that enlightening. Consider, for a moment, why the thief in this case is not being prosecuted at this very moment. I would consider that even more unprofessional.

So yes, abstractly, a thief should not have to give up their rights, but on the other hand, it's a thief -- and there's a particular concrete US ethos that influences mine and the jury's thinking about this. We wonder why we should care about the rights of this particular person who chose to steal other people's possessions.

In other words, cry me a river. :-)