Why was Trump hoarding classified government documents?

We don’t know the motive for the president’s retention of files at Mar-a-Lago and Bedminster, but let’s not rule out stupidity

The Guardian
There’s Evidence Trump Knew Mar-a-Lago Classified Docs Claims Were False, Report Says

The special counsel investigating the mishandling of records at Mar-a-Lago is reportedly set to receive 16 documents that show Trump had knowledge of classification rules.

The Daily Beast