You get to see your dying father for just one week as that is all the vacation time you have left and you cannot just walk away from your job due to house/kids/etc. Happened to a friend. Father had 6 months to live. He got 1 week with him in that time. Pile of cash lets you walk away. How horrible will that make you feel to not get to spend that time with him?
My employer, who I will end up leaving in a year anyway (if they do not lay me off as every company I have been with has had layoffs) as the best way to get a raise is to leave, is way, way, way, way down on the list of people it hurts to disappoint.