What's with everyone upset with Jesse and his moods? Is it really a shocker? He has made a ton of money, lost it, made a ton, lost it, made a ton, lost it, and made a ton again, been on and off a variety of drugs from marijuana to meth to heroin, and has been associated in one way or another with the death of about 15-20 people including having a girl he was in love with die setting off a chain of events that led to a plane crash with 100 or so people dying, watching an innocent kid get murdered, and personally murdering several people while nearly being killed multiple times himself. All of that happened in the span of a year. Thats enough crap for almost anyone to begin breaking down mentally, much less a guy who is basically a kid in his early to mid 20s like Jesse.