You greatly underestimate the power your presence can have over the years. I think life may surprise you. A sibling is someone who is a witness to a person's whole story. That can be very important and valuable. It would be a shame to let that get outweighed by resentments. I have seen siblings completely lose affection for each other over resentment after resentment piling up. You can see it on threads here. People can get into a mindset where they're practically looking for stuff to be mad about. Don't let that be the story of you and your brother. Chose a better story to live, and you can live it.