There's few constants in life. Death, taxes, and Willie Nelson's enthusiasm for pot. Unfortunately, it appears Nelson's health has caused him to give up smoking marijuana.
Nelson developed difficulties breathing due to years of smoking. “I have abused my lungs quite a bit in the past, so breathing is a little more difficult these days and I have to be careful," Nelson said.
Despite his health issues, Nelson gave no indication that he'd retire from touring going as far as calling his touring bus his home.