Originally Posted by missdimeaner

This is pretty much the only reason that comes to mind.
Being silver doesn't get me into the DKYWIA club (I would need to be bronze for that).
I know my Mother was slightly bemused when she received her bronze tags - something was said 'what am I supposed yo do with these ?' if I recall correctly.
They are useful for hand luggage, not so much for checked bags as they are not sturdy enough.