I think that's what it is, or at least part of it: Routine.
Like you said, the weekdays may be empty and uneventful, (at least for me) but at least I know for sure what's going outside my dark little world, in the REAL world. Time never stops there, and neither do the people and places.
It almost feels like time completely stops on the weekend, like I'm just suspended in time. It is awful boring and lonely, and half the time I CAN'T figure out what to do.
But it's 11:20 now, so the weekday is practically upon us. Enough about the weekend, then, in that case. It will be Friday night again before we know it.
Different day, same old stuff, that's what I say.
((((((((((one more hug))))))))))))))
Thanks for letting me "voice my fustration."