I think the sadness the OP is talking about may originate from insecurity. This, I believe, is an effect of Pluto in Capricorn. He's busy dismantling all the old certainties and structures which used to provide a sense of continuity in the world (for good or bad - for instance, a dictator can provide that sense of security and continuity, but living in a dictatorship is not a situation any reasonable human would choose to be in). Money's too tight to mention - so much of it has been pissed away by the plutocrats (interesting word, don't you think, indicating Pluto's association with wealth and power) meaning most of the world is facing lean times.
Meanwhile, new financial powers are rising from the debris of Pluto's destruction - China and India primarily - and who knows where that will lead us?