it's realistic.
in real life, when jimmy "breaks bad", it's going to be a moment at a funeral that changes his mind.
in tv life, it's walter white blowing shit up on the 2nd floor of Tuco's drug den, WAY over the top and highly entertaining.
so this show is way more realistic.
My biggest fear - not to be morbid - is that Jonathan Banks, the awesome actor that plays Mike, is going to get sick or pass away. He's 68 and IMO has aged terribly over the past 5 years (in real life). Watching the final last night, I wondered what happens if he gets sick/passes away. Do they replace him? just end the series? I'm sure he has the best healthcare in the world, but he just looks awful and i fear that could be the only thing to derail the show

I'm sure they can squeeze 3 to 4 seasons out of this show, and the show will get better even.