How Dorothy and Toto changed the world

This is a commentary not on the movie (sorry movie fans) but on a most sincere song. Now, men or women will have to admit on some level that this is a nice sweet song. I don't mean that most won't shed a tear over it, but there's something about this version that just makes me tear and think about my parents and life in general. I unfortunately can place my finger on just one feeling but it always overwhelms me and gets me missing them....