Some people are encouraged by others to serve because they demonstrate views that people think are worthy. But that’s not enough, to lead - from a parents’ group at a school or as a company president. There has to be charisma and likeability - which OBAMA had - but also a need for competency and experience for the job ( or at least surround yourself with those more experienced) which he didn’t. He really was a disappointment. On the job training that backfired. He’s probably more qualified and ready today.
A healthy ego is a must - Trump’s is exaggerated, plus he’s verbally impulsive and physically non- attractive. The voter base was willing to forgive these non attributes because he convinced them that he had answers to their distrust and dislike of Washington. He has a “get done” personality but leaves people in his wake. He’s pretty manic and probably already bored with the job. Plus Hillary was her own worst enemy in conducting a disinterested campaign and she dressed dowdy and seemed not physically up to the job.