cat82, I really feel for you. If my parents had sold our home and left the country as soon as I was 18 years old, I don't know how I would have coped.
My mother and father were supportive practically and emotionally. I could tell them anything and if they could help me, they did.
My husband and his parents have such a different relationship. I can't categorise it as good or bad, but they seem far less close. The reason is on both sides - my dh presents them with a rosy, airbrushed picture of our lives and they accept it. Every now and again, they will ask me in passing if things are ok, how am I feeling, etc but how can I ever say 'no actually things are not 100% ok' as that would directly contradict my dh's version? Whenever I have tried to do this, it hasn't worked.
I know that this game has its roots years before I was on the scene. I think it must have contributed to my husband's low self esteem. As far as I can see, he never really opens up to them, so they can never value him for what he really is.
Even when they know things are bad, they are so reluctant to throw caution to the winds. To give an example, when my mother was ill, we had just moved house and I had a new baby, I desperately wanted my inlaws to stay with us and help. They knew this, but my dh felt they would be in the way and said to his parents that we were ok. I know he didn't want his parents to see us in a less than perfect light. I still cannot get my head around this. I don't know whether this attitude means my dh is deepely damaged by them or whether the three of them just have a different, but healthy independent type adult relationship. They expressed their sorrow, and visited when it was New Year for social reasons, but not practical 'hands on in a crisis' reasons. They never visited my mother when she became ill in case she was upset about them seeing her in her condition.
The saddest thing of all, I now find myself joining dh and his parents in their game of airbrushing away life's problems. There are so very few things I can complain about to them, that they get a very false view of me.
As our sons get older and more aware, I expect more home truths will come out by mistake or on purpose. That should be interesting.