You guys that keep saying Walt did all this for his family are just as deluded as he is lol. Walt did it for Heisenberg. That's it. Working for his family is the lie Walt told himself to justify everything. This was all about his ego and greed. He said he'd stop after he got $700k, kept going. Could've found a way to get out after his cancer went into remission, didn't. Could've let Hank keep thinking Gale was Heisenberg, ego wouldn't allow it. Hell if he was worried about providing for his family, he could have taken that high paying, token gig with Grey Matter. If he were truly "sacrificing" for their collective future after his demise, he'd have sacrificed his pride.
As for Jesse, you guys act like he got pinched and decided to snitch on Walt to save himself. He didn't cut a deal with Hank, he snitched solely because wanted to see WW go down and seemed prepared to deal with the consequences. I honestly don't blame him. WW ruined his life. Repeatedly. I won't disagree that Jesse's self-destructive nature didn't help things, but every time he had the opportunity to go down the morally "right" road, WW manipulated him or the things around him to get JP to go along with whatever he had going on. They have some sort of dysfunctional loyalty towards one another (until recently at least) but JP is more of a battered wife than Skyler is (psychologically, of course).
If Walt's going to be killed it only makes sense for it to be Jesse at this point. Nobody else "deserves" to. Hank's gone and he's "protected" Skyler and the kids. Marie maybe but I'm sure Gilligan knows EVERYBODY would hate that.