All this and more makes the problems hard to spot, and harder still to fix. It's not like this is scheming, conniving optimizers wresting control from poor, beleaguered DMs. It's all pretty above-board, no abuse required. "Hey, I'm out of spells, maybe we should call it a day" is perfectly rational, especially if it's the party healer, or there's a major challenge ahead and the party needs every resource it can get. Worse, with 5e SR being 1 hour, the gap between "enough time pressure that a day's wait is too much" and either "too much so even 1 hour is unwise" or "too little so it made no difference" is narrower than it seems. Particularly when you must sell the players on this being consistently true session after session for most, if not all, of a campaign. 24 hour or smaller time pressure induces a lot of anxiety, making it hard to maintain long-term.