He can easily afford it after the presidency from the speaking fees he will collect.
Good point. He will be in demand on the speaking circuit.
Clinton earned tens of millions in speaking fees. Obama will be in demand as liberals and colleges pony up the cash to hear his words of wisdom.
Does he have the personal discipline to earn the speaking fees that he might collect as an ex-president?
Frankly, I doubt it.
After a year or two of lucrative speaking engagements -- some gone thru the motions, some skipped -- I suspect the income might drop sharply.