Hmmm, what an 'interesting' thread! I can categorically say that my DH doesn't watch porn. That doesn't make me deluded, it means I know my husband (and he spends very little time home alone!) and it isn't his thing. Anything that is available for free is tacky and really not a turn on, and he certainly wouldn't pay for it. We have a healthy sex life (slightly less than normal at the mo as I'm pregnant and my drive has dropped slightly!) and I am confident in his attraction to me. I wouldn't feel insecure if he were to watch porn if the rest of our fantastic relationship didn't change, but I would be very surprised at him. And yes, he is a very red blooded, strong, successful real man who I respect and admire...certainly not a prude nor a wuss. He has great taste...he married me!
A relationship I was in for a few years in my early 20ies was with a man/boy who had not had a serious relationship. Once we had been together for a while it became apparent that his formative experiences of sex had mainly been with porn...this was apparent because my size 10/12 figure was subtly being labelled as fat ("when are you going to go to the gym?" "You are a little larger than my friends' girlfriends, think about my feelings"...), I was deemed not vocal enough during sex, I wasn't into anal etc etc. He actually stated at one point that most women did like these things because 'it was in the films'. He was a very intelligent upper middle class boy, with a good degree from a RG uni and a successful career in international yacht racing. This is the impact that porn has on many boys, he wasn't/isn't extraordinary in any sense. I also have many male 'friends' from that circle who hold similar views. It disturbs me a little.
Luckily I saw sense and bailed, but I won't deny that it did dent my self-esteem whether I realised it at the time or not. I look back of pictures of myself then (about 5 yrs ago now) and think "god, why didn't you realise how pretty/slim you were!" The man was an arse, but it is foolish to say that porn is nothing but a harmless past-time to all. For some, yes.
It is also a little strange that some think that all men are the same in this, and of not they are not strong, red blooded etc etc. We wouldn't like similar generalisations made the other way would we? Haven't we been 'fighting' this for years?