A very wise person--I wish I remembered who so I could give the appropriate credit--once wrote "Every generation has the biological right to believe that the music of their youth is the best music ever made."
In other words, the music that was near and dear to you as you came of age musically--usually between the ages of 13 and 23 or so--is the stuff that will stick with you for the rest of your life, no matter what else might come along.
Keep that in mind as you look at this analysis of Rolling Stone's "Greatest Albums of All Time" list via Digital Music News. Note that the vast majority of their picks are from the 1970s with almost nothing coming from the 21st century.
Is this graph indicative of a Baby Boomer mindset? Or is there some truth to the feeling that today's music isn't as good as it used to be? There's no right answer, but the topic is good for starting fights.