That's scary. I've worried about that eventually happening to me, but I'm not to that point yet. On the rare occasion that my wife has shown some interest in me, I haven't been able to enjoy it as much as I'd like because I'm worried about how long it will be before she's interested again. It sometimes makes me feel worse because I'm reminded of how much I miss being intimate with her. After a while I'm afraid that everything I've been working towards will begin to seem pointless. And if that should happen, maybe I won't desire her any more. It's hard to say. But like you, I doubt that my libido will ever disappear entirely - and desiring other women while not desiring your wife seems like a disaster waiting to happen.
Also, all this time you've been doing what you truly believe to be the best thing for your marriage. And by opposing you, your wife sends the message that she doesn't care about you or your marriage. As much as you love her, there's got to be some resentment that builds up inside of you, possibly reaching the point where you begin to question how you could love someone that doesn't seem to care about what's best for the two of you as a couple. That might put a damper on your desire to be intimate with her.
I agree with the others who have said to tell her exactly what you're feeling - now that she's had a taste of what you've been going through, maybe she'll be more willing to work with you to make things better. Good luck.
