I'm also from the rest of the world but what you are saying doesn't match my reality. In every flight I find plenty of people (myself included) that don't want

I'm also from the rest of the world but what you are saying doesn't match my reality. In every flight I find plenty of people (myself included) that don't want to check in baggage, due to mishandling, possibility of loss, delays at the destination, and/or problems with connections. So even in airlines where you get a checked bag with the ticket, I regularly see all those things you say don't happen. Maybe it depends on which part of the rest of the world. I'm from Spain, for the record. At the Madrid airport you will see plenty of people queuing at boarding gates half an hour before they open. Most Spanish airlines even have a paid "priority boarding" option to board first, so people very much want to get into the hell tube sooner... It's true that all of this is amplified for airlines that charge for checked luggage, though, so I'd rather they don't charge even if I don't want to check in myself. Competition for overhead space gets absolutely crazy when they don't charge.