If you have siblings, do you enjoy a good relationship, or is it an adversarial relationship?

I have a brother, who is two years older, and we have always been at odds, in the way we live, how we have our homes, our friends, other relationships etc. I have talked to others who have one or more siblings, and they have the same problem. I have often wondered if "sibling rivalry is a universal problem for brothers/sisters?

What about GAG members? Do you have the same issues with siblings?

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7 mo
Almost impossible to select a MHO from the great responses I got.
If you have siblings, do you enjoy a good relationship, or is it an adversarial relationship?
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