Well I can tell you the male version of this story, and to answer your question, no I would not stay if I were you. I have been married twice, and believe me, no sex is just the tip of the iceberg so to speak. It is humiliating as all hell too, when you feel like your partner would rather get themselves off to porn instead of you. Looking back, I think I would have rather she been having an affair with someone instead of the porn. I mean it would have hurt, but at least it would not have been so humiliating.
I am sure you have already talked to him, like everyone else is suggesting. What I did in mine was this, I did have one final talk with her, and told her exactly what I was going to do. I told her that if she did not want to have sex with me, that I would have no choice but to go out and find someone that did.
You might want to go out and have an affair, it is an extremely good way to get your self esteem back. But bear in mind that affairs very seldom last, they are not like a normal relationship, as they are meant to end. But it will help you see things that you can not see given your present living conditions. For one, it will help you see if your marriage is worth saving or not. You will feel sexy again in your lovers arms, something you need to feel.
Sex is not a fringe that comes with marriage, it is an important element of a healthy couple. When it goes away it usually means there is a much deeper issue. Hope you can find the happiness you are seeking.
