The view that a woman should not wear pants isn't biblical. My parents had a belief that I disagreed with and they gave me an ultimatum to either practice their belief or leave. They did not expect me to leave but I calmly informed them I was taking them up on their offer and left. I had not felt that free in years! I had been paying all of my own bills, except for rent, up to that point so the transition was simple. Adulthood means more independent thinking and responsibility. It can be hard, but the rewards are awesome.
Don't ostracize yourself, but there's nothing wrong with keeping some family members at an arms length vs. right in your face. Moderation in everything, especially in reference to controlling, well-meaning, parents.