Message to Democrats: If you want to keep your majority, do not stay home, otherwise, don't complain when the Republicans clean your plow.
It's not a majority worth fighting for. I think they have demonstrated that abundantly over the past year.
Next time,
before we set about building another Democratic congressional majority, it might be helpful to actually build a movement that is powerful and influential enough to change the trajectory of this country, so much so that even Republicans will feel compelled to tend to their left the way moderate and conservative Democrats (who have an outsized influence within the party) currently gaze nervously to their right.
With conservatives still holding a plurality in this country (virtually unchanged from when George W. Bush had just won a second term), there really is no point in working to elect Democrats to advance a progressive agenda if the country still leans right.