My wife and I are very different people, raised differently, and with different beliefs. Most people I have ever met consider this a bad thing. I dissagree.
Everyone has their own path, or set of beliefs. It makes us who we are. Sometimes that path is uncertain. In such an instance ones beliefs can be altered. Altered, not changed. Each person has an effect on the next person, also causing change.
Only when one is closed minded will ones beliefs quit changing. A closed mind is stagnant and unwilling to continue to learn.
My wife and I get along better because we believe differently and have a respect for each other, and our beliefs. I am Shamanistic, but with a twist. My wife is Celtic/Wiccan, with a twist.
I believe, bloodlines sometimes dictate ones path.