I can understand that people want to have 100% privacy and not exist near people they don't get along with, but not sharing a kitchen and living room seems a bit too far.
Also I am sad that apps like the defunct foursquare or social network are not actively trying to make neighbors connect with each others. I fail to understand why.
I suspect that in the 70s, sexual liberation, despite its advantages, caused an epidemic maternal deprivation, where people are now unable to feel comfortable near others.