One of my Dad's favourite sayings was "a wise man changes his mind many times, a fool, never".In this day and age the evidence in front of us changes constantly. The only thing I'll never change my "old fogey" opinion on, is that to enjoy (and sing or play)folk music, you've gotta invest time and curiosity in it. Without the investment, it's just another pop song.
On the other hand, another of my Dad's great beliefs was that a man should "spend his last dime on a shoeshine (rather than something like a coffee) and learn to play a good game of golf"! He WAS a salesman though.
Rick