[Mr. Blonde]

I think a lot of people had similar ideas.

Interesting theory about it being the last episode in particular with this Norm MacDonald thing. Those last couple episodes went suspiciously smooth for Walt. I was just saying the other day how strange it was that nobody recognized this internationally-wanted drug kingpin driving around town, eating at diners and shit. And just WALTzing into Skyler's place, without getting caught? cmmaaaannn

Alternatively, I think Walt hearing his own son, for whom it could be argued he did everything, screaming "WHY ARE YOU STILL ALIVE?" might have just finally snapped his resolve to live, thus making him the calm and calculated "Finisher" before he knew his own end would come.

If he hadn't gotten hit with that stray bullet, I have no doubt he would have killed himself. And rightly so IMO.