I'm not going to do what my housemate wants me to do.
Why do you want to go against your housemate?
Because I can't stand his requests.
If your housemate's request is reasonable you should cooperate with him. It's rude to ignore them. You're expected to get along with your housemate.
Fuck it. I'm going to see him tomorrow and tell him to leave me alone.
That's fair but don't go into it with anger. Try to explain why his requests are unreasonable calmly.