DavidEduardo said:The problem with rock is a declining interest among most younger listeners and no growth of interest after the teen years where, apparently, interest declines.
This seems like the chicken and the egg. Teen and young adult interest declines because the music isn't interesting any more -OR- is it the music declines because there is a lack of fans?
I don't have any stats to back up my position but IMHO it was the music that killed the interest. It began in the early to mid-80's with grunge and other forms of junk rock and lasted long enough that it killed off interest in the genre. About that same time pop music splintered like it had never before and now all genres had many fewer fans each. In the 60's and 70's there was an avalanche of experimentation with all forms of rock which we haven't seen in over 25 years now. That about says it all.