I don't have time or need to read thru 8 pages of this but feel for the OP and just in case this hasn't been said yet, I wanted to offer it...  I'm a bible thumper but think you will find I have a surprising take on the issue...

Sexuality and sexual drive is a gift from God - its what makes men MEN.  Women have different responsibilities and drives that equip them for their purpose.  It is what it is...  If you want to blame someone, blame God but personally I think He knew what He was doing.

Now, just like with every good gift from God, the devil can twist and get us off the mark of it.  I think, in general, porn is such a thing - especially when it is true porn.  It is generally degrading and demoralizing to women and marriage in general, mostly because as women we don't understand the sexual drive of men and it takes sexuality out if the marriage bond into another place..

So what's the solution?  How about you taking sexy pics and write a few sexy stories for your husband.  Maybe even video your lovemaking for him to view at different times.  Let him clean his pipes to his hearts delight but with you as his desire.  Text him dirty a couple times a week - especially on those days you know you will be able and willing to rock his world when he gets home.  Don't try to suppress his sexual desires but rather work with them... 

Masturbation isn't wrong.  What about Genesis 38 - isn't masturbation bad?  No - what God was angry about was Onan not obeying His command to impregnate his wife, not "spilling the seed" - it's s total misinterpretation and straw grasping.  Deal with the fact your hubs will want it about 10 times more than you ever will...  And help him with that...

Professional porn or amateur stranger porn is a problem - it gets men desiring something other than their wives.  This solves that problem.  And switch it up in bed every once and a while.  Be the variety he seeks...  And realize sometimes he will prefer a quick release over actual sex.   It's a need for them like drinking water - sometimes you just want to drink out of the tap, other times you want to sit on the porch with a nice glass of cool Evian...  Don't be offended if he does - be grateful!  He's likely not going to want to tell you all about it either, so don't trample his privacy... 

When he sees tight booty in the grocery line, you want him thinking about coming home to you - that you're the pinnacle of his sexual fulfillment.  If all his sex and masturbatory desires have you as the starring show, this will happen...  That booty looks good and gets his juices flowing but you are the only one who can really please him...  If you want that to happen you've got to work at it...

And btw - it doesn't matter what you look like or anything like that.  If you are doing it right, you become the standard all else is measured up to, not vice versa.  Talk dirty to him about the parts of your bIody you feel are less than attractive to him during sex and next thing you know, it becomes his desire.  I.e if you have a big, jiggly butt talk it up during whoopee - and he'll start to see it only in a light that sexually gratifies him.  You have small boobs, talk during sex about how great it is to get so close to him and feel the power of him heaving on your ribs etc...

Healthy men like sex - the issue is that it's your job as his wife to help him explore that in a manner that is gratifying and healthy to both of you and your marriage.  If he's looking at porn, I'd say it's an indicator you need to work on this...