I hope I don't piss anyone off by saying this, but I hate when smokers throw their cigarette butts on the ground. I'm not terribly bothered by people smoking, I just hate the litter.
I kinda agree with you on this.
I dislike it when there is a butt-bin right near someone and they still choose to chuck their butts on the ground. Personally, when there is a butt-bin, or even a general bin, I'll chuck my butts out in the bin.
But... if there is no butt-bin, or any bins at all around, then I'll butt out on the ground quite happily.