That's the only way that we can experience the feeling of how someone from the past would feel about modern culture.

The easiest way to experience something close to what someone from the past would think of modern culture, is to imagine how you would feel about their culture. "There are no nuclear weapons, Al Qaeda is a nonentity, the NSA can't spy and taxes are very low. On the other hand medicine is in a horrible state, there's no gay marriage, religion is everywhere, and women can't vote."