The age for co-ops is coming. I think it will happen at about the same time as when Generation Ys gain the strength to break free of the tyranny of their parents' dreams for/expectations of them, and become dropouts, a la Joaquin Pheonix, respectable society finds hard to love and is getting in the mood to want see jetisoned. (It might be too late for many GenXers, who may have decided to accept the self-hate, while sticking with their diet-pepsis.) When they stop wanting to couch and undermine their independence with a clear demonstration that they, as much as their parents, ultimately seek ivy-league, professional, clean-and-green, onward-and-upward, relevance -- note how the cool kids in “Nick and Nora's Infinite Playlist” and “Superbad,” for instance, despite whatever wavering, still make clear that they are going to or could go to the ivy-leagues -- then I think they'll go for shared living environments as a way to spend the whole of their lives. Right now, they ha...