First, let me tell you, I'm not being self-righteous. I smoked for years; tried to quit also for years. How I finally kicked the habit (I had become a closet smoker); no, it was not will power or ability. It was bacteria pneumonia and a two day stay in the hospital coughing up blood by the cupful that pervaded me. As I told my daugther "It had never been explained so well before".
I never smoked again.
But when I did smoke, I never litered. (There's a little good in all of us.)
So, on to my next point. If you must smoke (I understand) don't litter with your butts. It's bad, bad, bad for the environment.
"[Cigarette butts] also present a threat to wildlife. Cigarette filters have been found in the stomachs of fish, birds, whales and other marine creatures who mistake them for food ... Composed of cellulose acetate, a form of plastic, cigarette butts can persist in the environment as long as other forms of plastic."
--Clean Virginia Waterways
Do us all a favor. Don't throw it out the window.