Crazy family issues aside, I can totally relate to what you are going through. We haven't taken a vacation either and DH has been totally stressed out and on edge this summer. I think a lot of it also has to do with him freaking out about our new baby coming in December, plus he is also trying to do renovations in our house in all of his spare time outside of the business. I can't do anything either to help since I am preggers and I think he resents that. He also feels guilty even going to a BBQ for a few hours because he feels he should be dong "work".

Your DD and mine sound like they have a lot in common! I think all men worry when they have a little one on the way - about being a god dad, provider, etc. Then throw in the whole self-employed stress on top, and it is hard for them to let go of the worry and stress long enough to enjoy the moment.
I was pregnant with our 8 year old when we moved in this "total fixer up" DS would panic if I tried to paint a wall or do anything! So, I can relate to a lot of what you are going through!
BTW - my threat worked! On Sunday, DS took the day off and took me & the boys to the Pirates game. Even though the Pirates sucked, it was still a great family outing. After the game, we walked the boys down to where Pittsburgh's 3 Rivers converge and they got to see a great view of the big city that is so close but we so rarely visit!