We've got some friends who are missionaries.  The wife councils sex trafficking victims and the husband mentors men trying to escape pornography.  They did a conference at our church and I was shocked to know how prevalent they both are including the use of pornography in church going men. 

 It becomes a drug that has to be fullfilled for some men, why its important to bring it into the light. Matt Friar talks about this a lot in his podcast.