Poor Nacho. He didn't deserve to die. Did he leave behind any kids?

Nacho’s home life was spent with two beautiful drug addict girlfriends who were always there for him. They made boxed Mac & Cheese and sat on the sofa with him, when not doing meth and having white hot sex with him. It was a full life— until it ended.

I think that Nacho's death was caused by Mike betraying him. Nacho was smart and disciplined and Mike was very good at engineering escapes. There's the moment when Gus basically tells Mike to allow Nacho be caught, because Gus needs a fall guy to take the blame for the attack on Lalo, so that Gus himself doesn't come under suspicion. And then there's a moment when Mike knows he can get Nacho out and Mike makes the conscious decision to obey Gus and let Nacho be caught. So Nacho was killed because Mike stopped helping him. I think that's why Mike in the end gave up and let Walt kill him, because Mike knew that he betrayed a decent person and that he didn't really deserve to get away alive after having let Nacho be killed.

In, I think it's the first episode of the last season, Kim and Saul sit down together in a diner or restaurant and Saul wants to stop taking down Howard but Kim really wants to keep going because she's having fun or whatever. And Kim says, everything we do to destroy Howard needs to have a reason, a logical cause-and-effect relationship between what we do and how Howard goes down, but it has to be hidden so it can't be traced back to us (something like that). And I think that's basically what the whole season is about, that everything that happens in the show has a reason that comes from what motivates the people in the show.

So going back to Gus, I think Gus's reason is that Gus isn't stupid, he's just a terrible person who doesn't care about anything but getting revenge and his own survival. Other people are just pawns in his game and it's not important to him whether they live or die.