Too bad this thread got de-railed into a silly exegetical argument. How about some practical advice?
To the OP if you're still around: Here's he harsh truth- your wife doesn't find you sexually attractive any more. Everything else is most likely justification and window dressing for that fact. It's not her fault, attraction is chemical, but at root that's the problem. You can't change her, but you can change you. I could list lots of ways to do that, but others can do much better than I. Check out <a href=http://marriedmansexlife.com/>Athol Kay's</a> blog and read his book, it's spot on for dealing with your situation. His advice is simple. Stop trying to change her, and change yourself into the best man you can be. Understand what gets a woman going sexually and make a plan to be that. Best case scenario you start pulling attention of other women and it shakes up the status quo in your marriage. Once your wife starts seeing that you have other options, she will very likely be miraculously healed from her 'emotional problems' and at least try and hold on to her meal ticket, if not start being truly attracted to you once again. It's worked very well for many men, check out the new forums for their stories.
I like a good theological debate as much as anyone, but sometimes you just have to get real and practical when people are hurting.
This is interesting thinking, but I think it is false.
Basically you are assuming the husband has allowed himself to become a fat slob whereas before they were married he was not.
And you shouldn't assume she will straighten out when she sees he might leave. She might be perfectly happy to keep the house, half of everything they have, and half (or more) of what he will earn for the next decade and have him gone so she no longer has to be obedient to him.
At some point in their life most women simply lose all interest in sex. It's not the man's fault and it's not her fault either. But it's reality.