Yeah, having worked at a tourist attraction and being responsible for sweeping garbage, I can attest to how inconsiderate with littering smokers are. For some reason, they don't consider cigarette butts to being real litter. Sure, they might not throw their candy wrapper on the ground, but why are cigarettes any different? They are still unsightly and have to be swept up.
But it doesn't seem like any smokers care about that, and find the ground a perfectly acceptable place for their waste. It only affirms my ideas that most smokers are generally inconsiderate people (kudos to those of you who properly dispose of your butts, though).