I think Christians do not study the bible by themselves for many reasons.
-We are intiimidated by the thee's and thou's and hath's and forget to read several versions to really understand what the Bible is saying.
-We are scared to read something that is speaking directly to them in their life.
-We are not ready to fully accept everything in the Bible.
-Christians, such as myself still question alot of things in the Bible and it will take a while to get to the point where we fully accept everything.
-And finally, Christians don't read the Bible themselves because we are not taught to. Think about it, alot of Christan parents take kids to church, the pastor does not preach about reading the Bible - they bash homosexuals, they say 'you're not doing right, you're doing wrong'. We find out alot of the Church leaders, ministers, popes, etc. are committing sins and molesting children. So faith is destroyed ultimately because we have no leaders to minister to us anymore.