re: Accepting that values and culture change over time.

There is some truth to your sentiment, but it also contains the greater perils of moral relativism and acquiescence. It is certainly true that change is inevitable. And one certainly shouldn't reject new ideologies or approaches merely because they are novel or different. But not all change is equally good, nor equally beneficial, nor equally connected to truth. History abounds with examples of generational and historical changes that had catastrophic consequences. For example, the rise of Roman Empire was better for human prosperity than its subsequent decline and the onset of the ignorant Dark Ages. Similarly, the founding and maintanence of the United States - the greatest Western democracy ever created - is better than its ultimate decline, should that ever come. And capitalism, for all its flaws, is more conducive to the human project than some gray, oppressive collectivism that stifles individual excellence. As long as I am alive, I have the power to influence the future. I feel obligated to use that power to bend the trajectory of culture in the direction of excellence and truth, no matter how modest or incremental my contribution may be. I won't embrace changes that are detrimental simply because they are fashionable amongst the very young and impressionable. It's folly to think that generational change is invariably the same as progress.