Adhd and smoking cigarettes

Anyone here thinks that ADHD is one of the reasons why you smoke? I feel like it helps the boredom and the restlessness, because when your out in the street and there is nothing to do, it's great so smoke one, and it also creates a moment to relax my mind and to reflect on stuff, which is something I normaly struggle with because my mind is always going a bit too fast. Obviously I know it's bad for me but I love it, and feel like it helps me in a way to relax.