Budget airlines and priority boarding are a particular bugbear of mine here. Most people pay for priority boarding just for the extra bag it allows you to take into the cabin. You end up with two thirds of the flight made up of people who have priority boarding. That's great, but there's only so much space in the overhead lockers, so you have everyone queuing up way before boarding starts to avoid having their cabin back checked into the hold at the gate.
The whole process is just... endlessly tedious and wearisome. I'd genuinely rather board a much slower form of transport, like a train, coach, or ferry (or even drive under some circumstances) than deal with being treated like cattle at an airport. The whole experience of airports, and getting to and from them, sucks.
I’d rather be happier, less stressed, and get there more slowly, than go through all the nonsense. I can always read, work, play a game, or just watch the world go by so the time isn’t wasted (unlike so much of the dead time in a noisy and crowded airport).
It also has the increasingly important benefit of being more environmentally friendly.