The organization skills you gain from keeping a neat folder and binder is all about regulating. If you want to be an artist and put your files in stacks, that's ok. That may be you.
What answer to why do we have to do this? Those who don't see value in the skill should do it now and get the rewards in the form of a grade. In some way grades will motivate you for all your academic career. Feel no guilt over that. It is funny to think of all the things grades ,and later money, will make you do.
Just remember, after my class, you did stay organized once.