score:7
Two factors I can think of. In the US, of course any quality or denomination of notes will be accepted anywhere (except perhaps in rare instances which I have never encountered). In some countries however:
They may not accept notes that are not absolutely pristine. Example: Burma. (Why this is the case or whether this makes any sense at all, I do not know. What I do know is that this is the practice there.)
They may not accept small denominations. E.g. they may accept only $100 notes. Or, even if they do accept smaller denominations, you may get much poorer rates for them.
Hence, your money-changer may want to know where you are going, as a favor to you. If you're going to the US, maybe they'll just hand you whatever they have, since it won't matter; perhaps they'll hand you a huge stack of old $1 bills (provided you don't mind). But if you're going to Burma, maybe they'll want to make sure to give you only brand new $100 bills.