Happy, I'm so sorry you are having a difficult time w/him being in the house, but you've got to find a way to keep your expectations at zero or extremely low. He truly doesn't have anything to give right now and trust me, his energy level isn't all it's cracked up to be right now. Going to work takes a lot out of him because he has to interact w/lots of people and when he comes home, all he wants to do is be in his own space and chill out.
Happy, it's time for you to find things that will occupy you and challenge your mind. You need your own space to figure out what YOU want and how YOU want to spend the rest of your life.
Also, I believe I am poster 101. You need to think about starting a new thread before this one is locked.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.