Overhead bin space is the big reason- give the somewhat (last 5 years-ish) changes to charging for the 1st checked bag, many who would have otherwise checked a bag are bringing on as carry-ons.

Many flights I've been on in past several years have had a real shortage of bin space, meaning getting on board early to make sure you're not the odd man out IS important (waiting for baggage carousel can take an extra 45 minutes)

> waiting for baggage carousel can take an extra 45 minutes

A few years ago, Houston airport authorities dealt with complaints that it took too long for travelers to get their bags after their flights. When the airport was built, the bag pickup locations were very close to the arriving gates, over time the airport got busier and people ended up waiting longer.

The fix was to move the pickup locations further from the arrival gates. This didn't change the length of time that it took to pull the bags from the plane and send them to the pickup location, but passengers noticed that their bags always showed up within minutes of getting to the pickup area. They essentially eliminated the waiting time by converting it into walking time.

Aha- that's a good anecdote.

Regardless of the perceived/ actual waiting time, however, it's MUCH better not to have to wait for a bag at all- going straight to curb or car rental and skipping that step is the only way to fly.

It wasn't that recent. I was flabbergasted by an advertisement in an airport in 2013, which was trying to entice people into a membership with "Free checked bag? Don't worry. You'll get used to it." Advertising as extravagant exactly what used to be standard with the ticket.

> what used to be standard with the ticket

Base tickets are cheaper now however.

I can buy a checked bag for myself. What I can't do is change that back to being the social norm so that everybody can get on and off the plane in a reasonable amount of time.

For me a part of it is indeed the overhead luggage space issue. But also I'd rather just be "on my way". If I'm sitting out at the gate, even if I'm reading something, I need to have part of my attention trained on the PA system, waiting for the boarding (or other) announcement. Once I'm on the plane and in my seat, I can read, put on headphones and watch something, whatever, without my attention divided, until we land.

It helps that I don't find airplane seats all that uncomfortable, at least no more uncomfortable than the seats in most gate areas.

This is standard task scheduling problem (see CLRS section 17.5) with added constraint of slowing down processing as number of tasks finishes. This added constraint is justified by the fact that as people board they won't stay put in their seats in aircraft, they move move around increasing the time to board for passengers who haven't boarded yet.

This still remains a greedy problem and hence allowing slower passengers to board first will reduce overall time taken to board.

And those boarding last roll their bags down a full plane banging into seated people along with jostling them around by using the headrests as railings.

And it’s all the airline’s fault imo.