I’ve put wrappers in my pocket on numerous occasions and lost them over the course of the next hour (usually depends on which clothes/pockets) so that might be part of what causes there to be so much litter but I have never intentionally thrown anything into nature besides a banana peel when I was a child. Throwing the banana peel into nature felt wrong but probably still is better than having walked a couple of hours with it to reach a mixed bin where it would rot and then maybe be burned.