I concede that it has nothing to do with the quality of the music.

You're better than the vast majority, who confuse nostalgia with quality all the time.

The older you get the more you have nostalgia for different times. You don't only have nostalgia for your childhood. You'll have it for your teenage years, college, your 20s, etc. This music was big when I was in college so that's what it reminds me of.

The real sign that you're old is when you have nostalgia about that time when you have nostalgia.