SCOTUS judges have life tenure once they are appointed, this is meant to keep that branch of government apolitical. They would be better able to make unpopular decisions based on the law instead of popular demand, unlike the other two branches. Are they apolitical? Of course not, especially in recent years. However I still think they are much better able to make hard decisions than either of the other branches given their tenure. If we think it is bad now, electing SCOTUS judges would make it much worse.