I try really hard to have a good relationship with my brother, but we really don't see eye to eye at all which makes it challenging. And we have very very different experiences with our parents. He has been in "self-preservation" mode for several years now and absolutely everyone is his enemy. It's hard.
I have virtually no "regular" memories of my childhood and teens, and the things I do remember he can't relate to. I spent many years believing that I was crazy and had tried to create new memories of my life until I spent a few days with an aunt and she mentioned some things that I remembered. After speaking with her at length and finding that she could corroborate some of the memory-fragments that my mother and brother totally denied was very theraputic for me.