I can actually see both sides of the issue (even though I'm an American). Funnily enough, I find myself preferring more and more as I get older the "Asian" style of families staying together.
We in the West focus too much on the negatives of a family instead of looking at the wonderfully positive aspects we attain from our families.
Personally, I want my future family (no kids yet) to stay together and form a cohesive unit. I want them to have the kind of relationship my sister and I have. We love each other, and in fact want to live together with our future families.
Why do y'all feel like you need so much "space?"
I find it kind of sad how families (in America at least) are so spread out and distant. Yes, we have the internet, but that doesn't replace face-to-face conversations.