I have pointed out before that corrupted, censored, bowdlerised, or misheard versions of songs often lose the point that the songwriter was trying to make, almost like telling a joke where the punch line is missing. This is particularly true of older songs, or songs in dialect, where a word or phrase which has become obsolete is replaced.

Even fairly recent songs are heading in this direction. If the result is still worth singing, then it will still be sung. And some songs are worth singing just because of the beautiful tunes.