*Why* do people speculate about the lore of RPG games?

So, I do enjoy watching lore videos on YT, sometimes. Similarly, reading and participating in them here on the forum. While not the most knowledgeable about for example DA universe lore, I do sometimes engage in lore discussions. But I also, sometimes think it's a bit.... pointless, not because of the idea that "it's a waste of time thinking about fantasy worlds", but because it's a franchise created and maintained by people who, tbh, don't seem to spend as much time ensuring that the lore is consistent throughout a multi-game series. That the lore changes so much based on changes in employment, and maybe the former writer didn't make a note to the next writer that so and so creature or person's background or so and so explanation needed to be remembered and the new writer makes up a new story.

But gamers engage passionately in the games' lore. DA universe attracts alot of lore buffs speculating on what's unsaid/unwritten and how something might be explained, similarly with the TES universe and you can probably think of several others. For myself, I like thinking about history alot. Also, I'm technically a historian (academically educated as one and worked a bit, but don't anymore due to disability) so I am used to imagining likely "scenarios" based on the available sources and physical evidence. Reading, listening and seeing videos of some lore exploration videos out there, does resemble speculations about history, about how events or personal histories that are no or only few sources to, likely went down. 

But it's still the fictional world of, not one person who can thus keep better track of it, but multiple people, who over the years change employees, writers, leave the project for years and then get back to it. High risk of misremembering, losing and making up new lore that doesn't fit with the pre-existing lore. Yet, the passionate lore buffs seem to treat the respective game lore universes' with the expectation that they'll find consistancy, the expectation that they can uncover, unwrap, unwrangle, "hidden" clues that explain things in the following game.

For example, if you're wondering HOW to explain why X happened in a game, relies on evidence from a previous game, and the game creators change the lore so that evidence is changed in the next due to some oversight, why does that not deter/distance/disaffect you from engaging in lore speculation about a game franchise's lore in the future? 

What, then, is your motivation to (publicly) speculate and debate on the lore of fantasy/sci-fi RPG's despite knowing that the next game in your favorite game's series might have "lore holes" in it?