That app requires ROOT. The majority of us are not rooted.
This is true regarding the App. But your second sentence is interesting because I was just thinking about this very thing when I pulled up the Play Store to look at this App.
Something caught my eye right on the front page ...
I was a bit shocked to see Root Explorer is the #4 top paid app on the Play Store. I too held your view that "the majority of us are not rooted", but in seeing this, I'm not so convinced anymore. I don't think you hit #4 on the top paid list by being the minority.
Maybe Bob Dylan had it right ... The Times They Are A-Changin'