This is a followup to @SorosFootSoldier@hexbear.net 's recent thread for completeness' sake.
I'll state an old classic that is seen as a genre defining game because it is: Myst. Yes, it redefined the genre... in ways I fucking hated and that the adventure game genre took decades to fully recover from. It was a pompous mess in its presentation and was the worst kind of "doing action does vague thing or nothing at all, where is your hint book" puzzle gameplay wrapped in graphical hype which ages pretty poorly as far as appeal qualities go.
So many adventure games tried to be Myst afterward that the sheer budgetary costs and redundancy of the also-rans crashed the adventure game genre for years.
I still think Doom 3 putting the torch as a separate tool from all the weapons was good game design, I will forever be salty that they changed that for BFG edition because of the nerds that complained about it.
I agree, in areas where Doom 3 turns into more of an arena shooter, there's enough lighting that you don't need it. The light and weapon management is part of the survival horror aspect of maze section. Obvs its okay to not like Doom 3, it's the most different of these games, but having the light always on is just making the game easier and less scary.