I love my wife, and do not seek another, however it seems my sex drive has died, every time she would like to have sex, IM not in the mood, it seems IM never in the mood. I/We do work 7 days a week, and sometimes get very little sleep, but it doesn't affect her sex drive, why just me?

Without any more information, at a glance, I'd say you're just exhausted!

I think sometimes we just don't realize how hard we push ourselves, but then it shows up in ways we may not expect, like no sex drive. Each of us is different, so to compare yourself to your wife is just useless... your body is your body and responds to stress differently than hers does. Plus the honest truth is that women have far less pressure on them sexually. Men *must* get it up!!! Women can just spread their legs!

Why not take a day off work, the both of you. Sleep in and spend the whole darned day in bed just cuddling and relaxing with nowhere to go and nothing to do, and see what happens? You really might both need to either try to adjust your schedules to allow for more relaxation time (all work and no play you know!), or accept the fact that your sex drive is going to be affected while you work these types of hours. For some people, maybe you, that is a side-affect they are willing to accept. But that's for you to decide! I hope this helped!