Should a Christian watch horror movies? A lot of Christians seem to think that it's wrong to watch horror movies. Others say that it's just another form of entertainment.

I don't know for sure which position is right. 

Though whenever I watch the Exorcist it usually makes me pray for days on end. So for me it's good.

Anyway, what are the common objections against it?
In 1 Corinthians Paul writes


  “All things are lawful for me,” but not all things are helpful. “All
  things are lawful for me,” but I will not be dominated by anything. (1
  Cor 6:12 ESV)
  
  “All things are lawful,” but not all things are helpful. “All things
  are lawful,” but not all things build up. (1 Cor 10:23 ESV)


There is no law against watching horror films, however is it going to be helpful to build you up in Christ?

Also, you need to remember who you are seeing the movie with.


  Therefore let us not pass judgment on one another any longer, but
  rather decide never to put a stumbling block or hindrance in the way
  of a brother (Romans 14:13 ESV)


While something may be lawful for you to do, out of love you should give up that freedom if it causes others to "stumble"