As great as Clooney is in this he still kinda doesn't fit in it
I think the main reason is Clooney given his persona cannot play a family man (husband or father). I could not see him as a man with a wife and kids with that kinda selflessness that it requires.
To a certain degree that's why Up in the Air was his best performance because he was playing a middle age man with no connection to anyone by his own calculating decision.