Whatever reservations I have about Trump (quite a few, even though I voted for him), they all pale in comparison to how I feel about Obama.
Obama was the most damaging president ever elected...worse than Wilson or FDR. At least FDR presided over the defeat of Germany and Japan by allowing the military to do the job. Whatever damage he did with his New Deal and other socialist-inspired programs, I got the feeling he still believed in America.
Obama is sui generis. While Slick Wilie was a rogue, he just wanted the perks. Obama sincerely wanted to transform America into a socialist hellhole. He achieved many of this goals.
No other president had the goal to run the country down and subsitute his vision of a socialist America like Obama had. He was the worst.