What do you do with your chewing gum when you're done chewing it?

I set a leather satchel down without looking the other day and ended up with a piece of gooey fluorescent green gum stuck to the bottom! Why??? Who throws their gum on the ground? And who sticks it under their chair? Can’t people learn to find a small piece of paper to wrap it in before tossing it in a trash can?

Do gum tossers throw their gum on the ground in hopes that it attaches to someone else’s shoe? Do decent people of normal intelligence do this? I just don’t get it. You may not have the answer, but haven’t you ever wondered?