Humans are in a constant state of emotion: Long periods of blissful work, rest and life that are separated by difficult — sometimes tragic — things. Then there’s society — the mass of us and our governments. Governments are as likely to get things wrong as right. In the U.S., I think we have to average things out when rating government administrations.
It’s said the market does better during Democrat presidential terms, but that’s not the whole story. It seemingly does, by a healthy margin, when the D prexy has both houses in an R majority. The market still does well — although not as well — when one house is R. It’s not good when the equation is DDD.
I have long had a theory that the American people don’t like DDD or RRR. They like RDD or DRR. And those mixes seem to do better — each requires more politicking, which is compromise and seems to get a better result than just one side of the see-saw getting all the weight.