I'm going to refuse to clean up after other people
What would happen if you refused to clean up after others?
I won't consider myself a helpful person then.
People are expected to clean up after themselves. They might become upset if you stop doing it for them, but they'll eventually do it themselves and you'll be freed of that burden.
I'm frustrated with how they eat and how much they make a mess. They don't deserve me.
Exactly, they expect you to do everything for them because you do it.