Personally I'd try to learn as much as I can.
And yeah, I think I learn plenty from history. I'd argue that other social studies are very reliant on it. I know Psychology and Sociology need history to develop (because they view cases over and over and develop their findings off of them). You could even argue that, since it's a good idea to have a fair amount of knowledge of Psychology for public speaking, Speech depends on it too. I really think you need a good idea of history for many things.
Again, I wouldn't toss away ANY subject though. xD
Now if you mean like, not history in GENERAL (as in never referring to the past further than you need to) but as in wtf happened when America was created and wtf people did when we lived in midevil times and Carmen Electra hadn't been invented yet...can't say I see TOO many obvious practical uses for it, but again, I think there's always a use in there somewhere.