Same reason we study history: those who don't, are doomed to repeat it.
We can learn from past generations, especially about large societal and cultural issues, even if those past generations didn't have things like penicillin or TikTok.
> The civilization won't go anywhere, we're too smart now, too capable, tiktok or not.
This is an advanced level of naivete combined with arrogance I wish that I had. Unfortunately, I've studied history and I can very clearly see the parallels between now and moments in the fall of the Roman Empire. Nothing is forever, and our civilization will fall if we do nothing out of complacence.
We can learn from past generations, especially about large societal and cultural issues, even if those past generations didn't have things like penicillin or TikTok.