I dont think that he can spend whole life in bars because the man is 75 years old already and maybe at 80 he will be released because of age requirements(i' not sure about this)
Why his age should be a factor here? He committed a serious crime, and therefore he should get the adequate punishment, irrespective of the age, race and gender. Allen Stanford was 62-years old when he was sentenced to 110-years in prison. What McAfee did was much worse than what Stanford did. I expect a minimum of 100 years behind bars for McAfee.