I have had the same gut feeling, but unlike you, don't have a reason for it.
I read a pretty interesting article by Byron York today that went over O’s “work” history.
To summarize..got bored easily, impatient with his ideas not being implemented quickly, always wanted a higher office...and didn’t stay on a job or political position more than 4-5 years.
Looks like his time line may have maxed out. I don’t think he wants the job any longer either.