The next step from always-on internet is always-on video conferencing. For instance, a family dispersed across the globe could set up video conferencing always-on in alcoves that look like windows. Then it would look like you're living in one house with a few connecting portals. The oddest thing about it would be time zone differences making it look like it's night in the next room when here is bright daylight.
Mokalus of Borg
PS - Also, as the size of your family increases, so does the screen space required.
PPS - And the bandwidth.