[nicejobman!]

Walter White only lost everything when he felt like he had to leave behind a legacy as Heisenberg. I know he feels like he missed out in life, but it makes no sense for someone like him to want to risk it all after realizing he no longer had an expiration date.

[browndrob]

Up until that point he was a nobody. What's more he had deep regret about being a nobody because he had to watch his friends become rich and important with his work. As a result, when he was Heisenberg he felt important and powerful and it consumed him. I could see it he liked the power and had the personality for addiction to it.

[SSundee]

Money changes people, no doubt