Smokers: They are the laziest, dirtiest and most selfish of all, throwing their litter everywhere.
Not true, as you quoted later chewing gum is the biggest thing we have to clean up.
Come with me on Sunday morning to Sheffield City Centre (around 7:30 when my lads start work) and I will bet you your mortgage that what you pick up concerned with smoking is 1% of what I will pick up in flyers, uneaten food and food containers / wrappers.