You did have the history wrong.
What's more interesting is WHY you believed 'fake news' about Jimmy Carter selling off his family farm.
I can't think of ANY President who 'sold off' anything.
Kennedy certainly didn't.
Neither Bush did. (Indeed, you may wish to compare the frequency of Trump at Mar-a-lago vs. Bush Sr. at Kennebunkport...)
Reagan had Rancho del Cielo -- his several hundred acre ranch at which he spent so much time that it was referred to as the "Western Whitehouse."
Obama went from $0 to a multimillionaire.
The Clintons went from a $0 to several hundred million. (As far as the Clintons... well, if you think the Clinton's didn't benefit from the Clinton Foundation, I guess you've drunk the Kool-Aid... You oughta take some time to see how many millions of dollars in speaking fees, travel, and accommodations the Foundation paid to the three Clintons.)
The Bush's were already incredibly wealthy, but probably quadrupled their net worth through their semi-private 'Carlyle Group' investment fund.
Your animosity towards Trump leads you to attack the one area where he's head and shoulders above the others: he's going to leave office with a lower net worth.