History is important because it can help us to better understand the present. By studying our past, we can pick up on trends in culture and economics to help us predict what could happen should similar trends continue. Rules which exist in today's societies were created in response to something which happened in the past. Therefore, we can look to the past to explain why a particular rule or set of rules exist. History also gives us an insight into other cultures, both past and present, which is important to navigating the current globally-connected culture and economy.
The study of history actually takes time away from studying how the present-day world works. History classes could, for example, be replaced by current economics and civilization courses.
[P1] History contains knowledge which can be useful to us in the present day.
Rejecting the premises
[Rejecting P1] The knowledge which history offers us is useless in the present.