Millennials live alone at far higher rates than any other time in history.  Perhaps if that conundrum could be solved, it might lead to less 1 bedroom condos.  But wait, aren't alot of these millennials 'loners' because of being helicopter parented and thus have a harder time in dealing with the 'uncontrollable' such as living with a roommate and sharing space with another?  A by-product of very little 'free range' playing.  Weren't these seniors also expected to downsize to 1 or maybe 2 bedroom condos?