Regarding Michael ...how come ?

Spoilers ( even thou most have seen the ep)
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He's the only killer on the Island he actully gets all guilt trippy
over his killing.

I mean Kate, Locke,Ann Lucia, Charlie, Sawyer ( two of em) off
somebody but there ok.  But poor Michael gets the ghosts and unwanted
immortality.

I mean Kate dad proberly had it coming but that was premeditated
murder, Sawyer killed an innocent guy the first time round.  Anna
Lucia offed Shannon ( she may have fault guilty , I think she
apologised but got over it) and lets not forget Locke knifing Naomi.

Oh and Charlie coldly shooting down Ethan in cold blood in a major WTF
moment.

Lets not start on Kates bank plan that could have ended up very bloody
for a freaking toy plane.

But poor Michael, rock and a hard place.  Trying to save his son and
doing what he has to done.  Lets just say I have a thorey that if he
keep his killing limited to dear old Snarling Ana and didnt expire
good old Libby he might have quite a few more sympahizers.

Oh and Sayid, dumbass.