We have an indescribably large database of facts and of primary and secondary sources, which all historians have access to and contribute to. We can analyze and narrativize for millions of different times and places, and also for millions of different peoples, and we can also form countless different perspectives. The perspective of kings, queens, popes, poets, peasants, trade, gender, sex, food, technology, customs, art, religion .. and so on.
Can there ever be an end to this? I understand that personal passions will always be a driving force, but can we "run out of history?"
My job is unearthing more history! Quite literally. I’m an archaeologist! Like you pointed out, there are so many questions historians explore. My field finds materials that can introduce new perspectives in those discussions and raises new questions. For instance, I am traveling to Romania this summer to study a Roman villa in Transylvania, Romania to learn more about the lives and identities of conquered Romanians. From my perspective, we have barely put a dent in history and are making more faster than we are uncovering it. We are finding more and more of our own history under our feet every day. I’m not sure we’ll ever run out of things to find and learn from.