When is the line drawn?

So after these weeks of classes geared to confuse us, I have a lot of ponderings.
First I want to know, whete do we draw the line as Christians then. This coming from the overall attitude towards secular media. If we as Christians should watch movies once it engages us in a challenging conversation, does the value of the question in the conversation negate the command that was given in Phil. 4:8? (If u do not know this verse look it up).
I understand the argument against Christians who try to a surround themselves in a little gospel bubble. How are they supposed to effectively reach the world through that? They lock the world out and, in essence, ignore the mission that Christ gave us to preach the good news to the world.

But I honestly cannot watch a movie that has a sex scene and block that from my mind because the rest of the movie has a great and challenging message. You see to me, media is different from holding a conversation with someone face to face. If I see someone who is a drunkard, curses every other line, is openly gay but challenges a wrong mindset in the church and is honestly wrestling with issues while searching for truth, I will not turn the off button on him like I would do with a movie. I cannot interact with a movie. And what I see stays with me, influences me.

Or is it possible to have an active conversation with a director through my own films?

My main struggle is where would we as Christians draw the line between meditating on God's Word and loving the world- and when I say loving the world I mean loving those who have not decided to surrender their lives to Christ?

It seems those who feel free to listen to whatever music and watch whatever films they want are celebrated as opposed to the "religious" types who don't believe that they are holier because they only listen to worship songs, but who genuinely wants whatever they feed their mind with to be a reflection of the word of God. Those poor religious Christians who are missing out on life.