Am I right to be insulted that my brother wouldn’t ask me to be a groomsman?

I don’t approve of it and I don’t like her. He knows that. We talk all the time. I see him sometimes. He was over here today. Our other brother is the best man so it is very weird to leave me out of it completely. They were going to do paintball with only the groomsmen and my other brother asked him about adding me into that group and he said that it’s only for them. I don’t know how I even Mention this topic. I don’t want to go to this wedding. In fact, the only reason I’m going is because it would probably upset my grandfather if I did not go. Otherwise I wouldn’t.

Am I right to be insulted that my brother wouldn’t ask me to be a groomsman?
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