The thing 2 point out here is that people of different faiths do marry and can live happily ever after.
I know of a Christian and a Buddhist, in a successful marriage...and I have also met a happy couple with the husband Jewish and the wife Christian.
People celebrate both traditional aspects of eachother's faith.
If two different faiths cannot intermarry happily...why would the world even bother with bi-racial couples?
Differences will always be possible...that never changes the fact that in the name of love we have 2 accept some of them.