The senate behaved in Avery protective mode. They wanted to preserve their own power...that was both parties. Many in the senate then are still there. With Reid as majority leader an impeachment trial will never occur.
It is important to pick your battles lest you do more harm than good
You either belive in the constitutional remedy and by extension the authority of the constitution itself to govern us or you don’t.
Do you or not? you do not get to pick and choose.