hellosailor I had a very similar experience to you. I think it was so bad because my parents allowed it to happen by ignoring my brothers nasty side and by not encouraging anything nice between us. They were well past caring by the time we got to teenagers and i left home as soon as i could. So i would say it is how you bring your children up by encouraging sharing caring and love, good luck. By the way my brother is still nasty to me when i see him once a year, we are in our forties, he just cant seem to help himself!