The fact that Fredo failed in protecting his Father shows that he was really not meant to be a bodyguard(Blame Sonny for a lack of appropriate back up for his Father, did he really think that Paulie and Fredo were up to such a job.It always seemed that there was plenty of tough guys shuffling around the compound leaning their fat asses against the cars?)Who of us would turn down two cocktail waitresses if they were available and told that they better spread their legs for you.Why shouldn't Fredo be allowed to blow up at Michael who is he Jesus Christ? Their seems to be this cult of Michael worshippers (all that sullen machismo must be a real turn on). Yeah Fredo had a good heart,and look what it got him, being fish food at the bottom of Lake Tahoe.His first instinct to run away from that sack of shit Michael in Havana was the correct one.