People being rude to you, expecting you to want them in your life despite how they treat you or expecting you to do things for them under the guise of 'but we are family' because a while ago a certain combination of people had sex which made you blood related and therefore they are owed a place in your life rather than it being earned.
Its pretty weird when you think about it.
Two people decided to shag and many years later you are expected to sit at Aunt Hildas birthday party despite the fact she's called you fat since you were six.
And there are people out there who call you selfish if you go 'no contact' with family, despite the fact im 'no contact' with several billion strangers - people ive not met who I dont have a relationship with. You wouldn't get judged for not wanting to speak to your ex, someone you actively chose to date and have in your life. Yet its selfish to not want contact with someone you are societally forced to interact with just because two people decided they fancied a shag??? Its so weird when you think about it.