This is one of the changes I like the most about Shadowdark. None of the players have darkvision, but all of the monsters do. Combat is unpredictable and dangerous, and darkness is a real threat. And Torches are finite resources that last 60m of IRL time, so there is an in-game impact to dilly-dallying, endless debates, and rules-lawyering.

Yep. So many races/species have darkvision, and so many people prefer playing non-humans, that it usually doesn't matter, and a single Cleric will typically have Light prepared anyway.

I should really start running more sessions in a dark place, where stealth matters.