Here is an article that raises some very important questions:
Some of my own thoughts regarding this issue:
I remember when I bought a Dake Study Bible. They were quite popular with a few people I knew, but were very hard to obtain. One day I found one and bought it, despite the significant cost and I spent a lot of time reading it. Unfortunately it wasn’t the bible part that I read. I spent more time reading Dake’s notes. But that wasn’t surprising considering there was much more written in the columns and pages of notes than in the columns of scripture.
How easy it becomes to avoid reading scripture while reading a study bible!