It is a sin to bore a child with the Word of God.
The Bible is owned, read on occasion, even taken to church - but not studied.
Don't put eggs under dead chickens.
So the first reason for studying Scripture is that it is a means of spiritual growth. There is none apart from the Word. It is God's primary tool to develop you as an individual.
You are free to make choices. You are not free to escape the consequences.
If you are not thinking correctly, you are not living correctly. What you believe will determine how you behave.