- There are many reasons why I quit weed, but health was the big one- When I smoked weed, I would use a pipe and a lighter- And I smoked a lot- That can't be good for my lungs- I want to live long without disability (healthspan)- Exercise is important to living longer and healthier- Quitting weed made me less lazy which prevented me from exercising- Since I've quit weed, I've been exercising more