What poll? About Amazing Grace, I have mixed feelings about the song because it is so difficult to sing unless you are a soprano. As a result, I do not like the song. I know the story behind it though and can appreciate the text.
The most important thing about whatever we sing in church, is the words - the meaning. One of my favorite old hymns is I Love To Tell The Story. This hymn came from a poem written in 1866 and published as a hymn in 1869.
It isn't a popular song for modern churches. Listen to it on Youtube