Why is it fine? History, paleontology, anthropology, cosmology, and other fields have highly educated people spending their entire lives dedicated to recoverin

Why is it fine? History, paleontology, anthropology, cosmology, and other fields have highly educated people spending their entire lives dedicated to recovering the past when it couldn't be preserved or when people tried to purposefully destroy it. Knowing about the past adds to our understanding of the universe and guides us into the future. There is no downside for our current culture to know about the past. Plus sometimes it's just interesting.