I'm not going to talk to my brother except for on holidays
Why don't you want to talk to your brother?
He is the type of person with extremely different tastes than me.
It is normal for brothers to be different but you should still try to have close relationships with your relatives. Family are there for you your whole life.
It's not like I never talk to him. Everyone just has different opinions and tastes. He can carry on talking to me since I don't give a shit about his opinions.
It is good that you are not cutting him off completely but it is damaging to your relationship to not want to talk more to him. You could lose out on an important relationship and regret it in the future.