Though I understand why they want to it do it if only because they're vindictive shitheads who want to set a precedent, and because they don't want Trump to ever be able to hold a political office ever again, it's a waste time, and money.
Trump's already destroyed himself. He's completely tarnished his reputation, been banned from basically every social media site under the sun, among other things, and has pretty much taken down his entire family, and the entire GOP with him. Just leave him to his fate, and don't make him a martyr. Just walk away, and let him fade into history like all the presidents before him.