Idlehour 3 years, 10 months ago on Discarded cigarette causes fire at JC Longhorn Steakhouse

I don't understand the mentality of smokers that throwing cigarettes (lit or unlit) on the ground isn't littering. Most of us would never throw a cup or paper on the ground. Why is it ok to throw a cigarette butt, or empty one's ashtray, on the ground? It's filty.