Wow, talking about people believing what they want to believe.
'Obama didn't attack the press'
On more than one occasion, Obama went after FOX news. Not surprisingly, the only news outlet that did not praise him constantly.
'he didn't attack our allies'
Neither did Trump. But trump critiqued the hell out of them. And I am all open ears on how wanting NATO to pay for their fair share is a bad idea.
he didn't lie constantly
He lied plenty. They all do. Obama's biggest achievements as many put them, the ACA(you can keep your doctor/$ saved), ending the Iraq War(he ended it but had nothing to do with it), and the Reconstruction Act with shovel ready jobs, all based on lies. Obama even smirked about the Reconstruction Act when asked.
'he didn't push to have the DOJ act as his personal attack dog'
He can claim ignorance on all the Russian investigation antics and the Hillary investigation, that would make him look incompetent. Or, he could say he knew what was going on which means he used it as his attack dog. Either way, he looks poor.
he didn't commit obstruction of justice
So, either did Rrump yet. Last person for that was Clinton, or maybe his was he perjured to congress. Cannot remember.
'he didn't have a cabinet full of people force to resign in disgrace for corruption and incompetence'
Care to elaborate? There has been also turnover in his cabinet, not sure they left due to your description.