I feel your pain. It is difficult to trudge through a troubled M knowing that there could be mind-blowing amounts of passion waiting just around the corner. Karen is right that there would likely be other problems that would crop up, and although those problems might not be overtly sexual, they would likely influence the sexual arena. But there is also that thought that floats around that maybe there wouldn't be significant problems. Not everyone is on message boards complaining about lack of sex.
I am also sorry about all the crap you are going through recently. I'm on that same rollercoaster, and unlike real-life roller coasters, the dips are no fun. The only advice I can give is to endure the dip, and strive to make the peaks get higher each time. And don't spend too much time watching the other people having fun on their rides, or you'll miss the good stuff on yours.
Chrome
"Recollect me darlin, raise me to your lips, two undernourished egos, four rotating hips"