Why do we need to throw our rubbish?

I am learning to explain why people throw rubbishes on the ground.

Why do we think we have to throw rubbishes?
Because sometimes we get lazy and throw. Because none of us care. We never listen. Because we think we can do truth or dare to drop your rubbishes.

Why do you we do throw rubbishes in the bin?
Because we want to keep the school tidy and hygiene. We want to smell freedom. We want to get certificates or students of the week. We ask for help to clean the areas.