Dave,
Even if you can't take a trip - maybe an afternoon or day our would help. I can't imagine your exhaustion. My brother's battle only went on a year and I was not the primary caregive and it drained me of everything I had. Please know our hearts are with you. Can someone help you out for a day? A friend or relative? Take up those offers of "anything we can do to help". People usually mean that - they just don't know what to do. As for the blues - I've found they are like the waves of the ocean - and everynow and then a big one comes along and knocks us off our feet. But, it will recede and we will pull ourselves to our feet again and stand even more firmly against the constant pounding of the smaller ones. I wish you and your family peace.
Tonya