Obama says he wouldn't run for a third term, even if he could...

President Barack Obama says he wouldn't run for a third term even if he could. He says the presidency takes a toll on family life, and the office.Obama tells CBS' "Sunday Morning" that he's not yearning for a third term is because one, his wife Michelle wouldn't let him and the office needs new ideas..He said

 "No. I wouldn't," Obama said. "Number one, Michelle wouldn't let me.This is a process in which the office should be continually renewed by new energy and new ideas and new insights," Obama said. "And although I think I am as good of a president as I have ever been right now, I also think that there comes a point where you don't have fresh legs."

Obama also said there "absolutely" are days when he wonders why he ever ran for the presidency, saying there are times when he gets "tired" and "frustrated."

"And yet, there has not been a day that I have not walked into the Oval Office and understood that at no point in my life will I ever have the chance to do as much good and make as much of a difference in the lives of people as I do right now," Obama said.

Obama says the thing that makes him happiest about his presidency ending next January is a chance to get out of what he calls the "the bubble." That's what he calls the tight security controls over his travels outside the White House. He says the bubble is "the hardest thing about the presidency."