Can we really call being packed like sardines a chance to daydream? I see the point about people watching, but when you're crushed against strangers, all you notice is the heat and the smell. Someone's elbow in your back or a wet umbrella dripping on your shoe ruins any chance to relax. @the_linda called it straight up misery, and I have to agree. Sometimes there's no silver lining, just a crowded train you want to escape.

You know, that "proper book" thing reminds me of my friend Jess who bought a fancy hardcover without a ribbon bookmark. She kept using old receipts to mark her page and actually lost her spot when the receipt fell out during her commute. She said it felt like the book was unfinished, just waiting for her to lose her place. Makes your point about needing them pretty clear honestly.