The way I understand it is that the way it comes across on TV is not all accurate. Yes, they are going through something & are not very happy at the moment but it doesn't necessarily mean they are at they're tail end of their marriage.
Kate's sister was interviewed saying it's sad how they're stuck in their contracts for at least through this season and they pretty much edit and put on TV what viewers want to see, the drama of it all now that all the tabloids and the ugly side of trouble marriages has reared it's ugly head. Too bad they can't work on it without the cameras but that's pretty much what you sign up for when you sign on the dotted line for "x" amount of years/seasons, especially to have cameras follow you 24/7.
It was also agreed in the beginning that Kate would do the traveling and promoting of the show & book while Jon stayed at home but of course, that too was eventually gonna bring on stress & strain to the marriage/situation..
It was very hard & sad to watch last night...and to see them sitting on the couch like that...very sad & I'm really hoping Dr. Phil pays a visit...
j/k Okay maybe Oprah??.. alright...nevermind... just lots of prayers for the children!