Aren't you curious about the world, about history, about psychology? You won't be able to learn deep rich history if you don't remember what you read in the first nine books once you get to the real payoff in the tenth book.
Honestly, I'm not. I like to build things, software, hobby electronics, a bit of cooking and baking, but all of that stuff is best learned through experience, not rote memoization.
Other than that though I find it far more enjoyable to do something other than blindly consume knowledge for no purpose, I'd much rather engage in social activities or play games - even making numbers go up is more satisfying to me than memorizing factoids of limited practical use to me.
Personally as a software engineer I feel quality sleep makes a big difference on the quality of learning I get through experience. I'm more sensitive to the details that matter and develop deeper insights when encountering a new problem.
