You emotional Hex. Walt in the dope game. Ain't no rules. Tony iced his nephew Christopher. Killed his best friend p*ssy, and killed Christopher's fiance without blinking. This the world Walt in. He ain't a rookie, he knows what should be done. Quit trying to give him passes to fit your logic. Is Walt Scarface like you been saying and a criminal mastermind? Or is he herb trying to be a G? Which is it?
Actually nevermind, you gonna fall back on this show isn't meant to be realistic. So no need to answer.
the whole reason walt did this in the first place was family
now you want him to kill all of them ?
do realize if walt kills hank, the whole ABQ will be code red and marie or skylar would go to FBI
if walt kills skylar, hank would get his whole unit on walt until hes dead. also, no real reason to kill someone he still loves and leave his kid motherless
if walt killed marie, see #2 + hank would make sure to kill walt himself
lydia is the only one he couldve killed (and prolly shouldve done before) with little repercussions
even scarface had rules. he had to kill manolo because of his family. he had 'no kids' rule as well. and scarface in general is an essence of gangster caricature.