I don’t think people “feel the need” to litter, it’s just plain apathy, they’re not feeling anything at all. It’s just “I don’t need this thing anymore,” probably more a feeling even, not even a conscious thought, and that’s that. I can’t stand the thought of littering, even leaving my table messy at a restaurant is unthinkable, but some people I know wouldn’t think twice about just dropping trash wherever, even in their own homes. Those kind of people are like animals to me, I just can’t even process what goes through their heads during the day.