Do you agree that people aren't obligated to like their sibling if they aren't good people?

Most people follow the herd and like their sibling no matter what. My sister said one time she wishes I never existed because of my bad asthma when I was a kid. And because of that we aren't able to get a dog. I don't like her for that and many other reasons. She isn't a good person.

Do you agree that people aren't obligated to like their sibling if they aren't good people?
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