Walter never wanted to be addicted to the stuff he was making. He was already sick because of cancer and doing drugs could worsen his health and as Johnny explains in his answer that being Chemistry wiz he knew the ill effects. He wanted to be alive and awake all the time so that he could take clever decisions and complete his job no matter how difficult it was, be it packing & transferring meth, or killing someone. It would have been difficult for him to manage everything he was doing and lying to people would have been difficult for him.

He also had to return to his home every night and sit with his family plus his brother in law was in the DEA and maybe he could sniff meth because that was everything he looked for. Maybe he also felt mature to do stuff like this and he also had kids whom he never wanted to influence.

Walter never wanted to be addicted to the stuff he was making. He was already sick because of cancer and doing drugs could worsen his health and as Johnny explains in his answer that being Chemistry wiz he knew the ill effects. He wanted to be alive and awake all the time so that he could take clever decisions and complete his job no matter how difficult it was, be it packing & transferring meth, or killing someone. It would have been difficult for him to manage everything he was doing and lying to people would have been difficult for him.

He also had to return to his home every night and sit with his family plus his brother in law was in the DEA and maybe he could sniff meth because that was everything he looked for. Maybe he also felt mature to do stuff like this and he also had kids whom he never wanted to influence.

Walter never wanted to be addicted to the stuff he was making. He was already sick because of cancer and doing drugs could worsen his health and as Johnny has said in the answer above that being Chemistry wiz he knew the ill effects. He wanted to be alive and awake all the time so that he could take clever decisions and complete his job no matter how difficult it was, be it packing & transferring meth, or killing someone. It would have been difficult for him to manage everything he was doing and lying to people would have been difficult for him.

He also had to return to his home every night and sit with his family plus his brother in law was in the DEA and maybe he could sniff meth because that was everything he looked for. Maybe he also felt mature to do stuff like this and he also had kids whom he never wanted to influence.

Walter never wanted to be addicted to the stuff he was making. He was already sick because of cancer and doing drugs could worsen his health and as Johnny explains in his answer that being Chemistry wiz he knew the ill effects. He wanted to be alive and awake all the time so that he could take clever decisions and complete his job no matter how difficult it was, be it packing & transferring meth, or killing someone. It would have been difficult for him to manage everything he was doing and lying to people would have been difficult for him.

He also had to return to his home every night and sit with his family plus his brother in law was in the DEA and maybe he could sniff meth because that was everything he looked for. Maybe he also felt mature to do stuff like this and he also had kids whom he never wanted to influence.