"Normal" can have two different senses. Something can be normal in the sense of statistical average and something can be normal in the moral or purposeful (teleological) sense.
Looking at porn may be "normal" in the sense that, statistically speaking, most men do it. But this doesn't make it any less bad and it doesn't mean we should be less repulsed by it.
Let's take another example. (Sorry, but I have to use an extreme one to illustrate the point.)
Say a mother, fairly wealthy and living in NY, kills her 4 year old and eats him for dinner.
We would be and should be "freaked out by that" and think (hyperbolically) "that's the most evil thing in the world!"
Now pretend that instead of just one mother doing this we find that 40 million mothers in America have been doing this, secretly, over the last 15 years. Let's pretend that this makes it the statistically normal thing for mothers in America to do.
Now would you be more freaked out or less freaked out by that?
Honestly, I would be more freaked out. I would want to move to a different country.
The fact that most men look at porn should alarm us that something is seriously wrong with our society. Because the normal thing for men to do, the thing God intends for us to do, is not look at porn. That's immoral and abnormal. I don't think anyone needs to look at porn (anymore than the mother needs to eat her baby, no matter how strong her unnatural desire to do it is).
If a guy can't control himself he needs to get help and get married. If he is married and can't control himself then he just needs help.
