Jim....I never expected such a stereotypical response! Hope you wear a check shirt and say 'eh!' at the end of every sentence.....

No - it's not a fine song, but it is a very commercial one and I was (and am) conscious of how popular it is. Doesn't sound like a 'folk song' to me, though. Deliberately learned it all those years ago for the reasons I cited earlier. (I also like playing it - nice chords)