I’m not sure where you heard this, but genetic diversity has overwhelmingly been viewed as beneficial, lessening the chance for genetic defect. A mixed gene-pool is a good thing, and to the contrary, the lack of mixing has produced more harmful results; from a biological/genetic standpoint, we should mix as much as possible. It’s one thing to oppose popular ideas for the sake of doing so, but at the very least, an acknowledgement of empirical facts and evidences should have greater bearing.
As to being culturally ruinous, I’m a bit surprised to hear you express this, as it seems like a bit of a contradiction. Above you described the views of an emerging contrarian, but at the same time, you want to preserve collective culture? This is not an attack, but its a bit puzzling, as it appears to be leaning away from opposing interracial mixing, in general, and into more extreme ideas.
That said, culture has historically been prone to change, eventually, as we progress and evolve. Culture, by itself, serves its purposes (the synergy it creates among groups), but maintaining it isn’t innately “good”, just as deviation from a given culture isn’t “bad”. Some couples seek to preserve aspects of their respective culture, while others naturally drift and/or set the foundation for what becomes a new culture/practice. Such is life, it is not static.
What value is that?
Also, if you see the value in actual diversity, you should favor interracial [mixed] mating.
You have greater chances of finding a “suitable mate”, when you loosen biases and thus, afford yourself a greater selection to “pick” from.
Either way, this sounds like a bigger social hurdle, due to close-minded individuals, and at times, as an extension of conservative aspects of culture. If interracial dating were more ubiquitous, it would lessen this “issue”, without question.
Not at all. You can preserve culture and tradition by teaching your children, as humans have preserved aspects of their culture throughout history. Not all aspects of culture are lost, but they have and will eventually change.
Also, you assume, for example, that culture within its own sphere of influence doesn’t change. Even with closed societies, people and their ideas/traditions change and evolve. Many times, this process is just hastened through interaction with others.