Better to teach people how to stop evil completely than allowing them do it occasionally. The internet can be as risky as the physical. Your defense or shield is weakened even more on the internet. And when it's weakened the evil that surrounded it eventually breaches it and gets closer to you, even in the physical.
So, what you do online can affect you physically.
However, the fact that Jesus took the punishment for all sins, changes the reasoning behind why to not view porn.
Since everything is covered by Jesus, there are only two points... believe in Jesus salvation or don't.
The only reason why evil is not good (since it is already covered by Jesus) is that it weakens faith in Jesus-salvation. Being good doesn't really count for anything, because nobody can be perfect, the thing that is required to be saved without Jesus.
We need to focus on Jesus and His salvation for us. How? "Faith cometh by hearing, and hearing by the Word of God." So we need to fill ourselves on Bible words, the only real way to increase faith.
