Jerryko,
Because there are still plenty of stations (we have 3 right here in Eugene) that still play music from the CD or even directly from (gasp!) vinyl. These are all public stations, and you can definitely tell the difference from the crappy compressed commercial stations you're referring to. If such commercial stations are your only choice, I agree that it doesn't matter what the signal OR the receiver is doing.
Because there are still plenty of stations (we have 3 right here in Eugene) that still play music from the CD or even directly from (gasp!) vinyl. These are all public stations, and you can definitely tell the difference from the crappy compressed commercial stations you're referring to. If such commercial stations are your only choice, I agree that it doesn't matter what the signal OR the receiver is doing.