A. Damnation is not an empty threat. But if you're right with God it's not something you need to be afraid of.
B. Healthy sexuality is not evil. Porn is NOT healthy.
C. I'm not one of those religious nuts who go around knocking on peoples doors. Nobody's perfect, me included.
As a follower of Jesus I dislike when people twist faith into religion as well. Faith is free from fear and guilt. It's trusting God to protect and forgive. Religion is the ritual of going to church every Sunday and listening to a guy yell at you and tell you you're doomed. You are absolutely free to do as you please, but I've been very close to being addicted to porn and my warning stands. It WILL consume you and your future. If God hadn't helped me out I wouldn't be where I am today. Faith is freedom.
If you'll excuse the assumption, I would say that you've been conditioned to believe that religion is the same as faith or that they're inseperable. I'm also going to guess you skimmed my comment, saw God and immediately decided I was wrong. The side of Christianity that you've seen is the side that gives God's followers a bad rap.