good old tuners going obsolete

Well I didn't getting any feedback on my post about the Marantz ST-7001. I know it is one of many that will be the new wave of the future. Already radio stations are advertising that they are launching HD channels. Which means that if your using that much cherished - - - - - - - - ( fill in the blank with your favorite tuner ) you will not be able to pull in any of the HD channels, you will be limited to only the channels you are receiving now. And it is my understanding that some of the stations are already planning on putting different programing in the slot that is available to analog tuners. Of the high end tuners I have been able to trace so far, only Marantz and Magnum are making HD tuners. What I just can't figure out though, is why people are so willing to shell out big bucks for these analog tuners here and on ebay. They will soon be next to worthless :(