Being a Australian born Chinese myself, I have had qualms about certain interracial relationships, especially when I believe that certain traditions and customs may not end up being respected or understood. This is especially the case when the dominant culture in the society is represented in one of the people in the marriage. This may lead to a marginalisation of the other cultural side.
Now of course if there is enough communications and mutual understanding no fallout based on traditions and culture need happen.
Now as a Christian I believe that ultimately it does not matter, however to me it would seem that many enter interracial relationships without much consideration of the differences in culture. Now of course you might say if they don't care about that it's fine, but if it's the dominant culture that always takes hold, the partner that holds to a more minority culture might be walking unawares into a marriage where they will unwittingly find that their cultural expressions might come at odds.
To clarify , I am talking about this as a second-generation kid living in a "Western" society where many of its norms disagree with me just being Chinese (now I am not saying that Chinese culture is better in any way, there are plenty of bad points about it, but there are also good points to it, like the respect for elders).
Conclusively, I am not saying interracial relationships should not happen - but rather when they do, couples do need to think carefully and prayerfully about how they are to address the differences in cultures.
Though as a restriction to my claim is if they are of the fourth to fifth generation in the same country the individuals might virtually be cultured in the same way .... I am more talking about immigrants, the second-generation, and individuals with a strong cultural tradition (and this of course depends on the family).
Thanks for reading! Hopefully I don't get too much backlash (I know this might come off as cultural supremacy, but if it does come off to be so I had no intention to do so - but you might judge me to be so anyways).