Easy to pick Trump as I didn't live through Nixon but on every single measure Trump has degraded political, public and business life. There is no aspect I can think of where he hasn't lowered standards.
Worse of all, he has create a personality cult which is incapable of determining fact from fiction and has actually developed coping mechanisms to deter themselves from confronting facts that are inconvenient. He has built an army to proliferate this nonsense globally which we now encounter daily on social media, even our own family and friends are infected.
His legacy is infecting ordinary people with mental illness and delusion, diverting their legitimate grievances to dead end issues and bigotry, and lowering the standards of decency on every single conceivable measure and inspiring other conservative leaders to mimic this.
It's been the worst 4 years for the globe since WWII.
Even with the looming dread of a more sophisticated and deadly replacement, and the installation of a geriatric ghost in an adult nappy representing the supposed 'good guys' (yeah right) , I'll be raising a glass in celebration at the official fucking off ceremony. You have to take the wins when you can get them.