United looked at their existing system and decided to make it much, much worse. People who need help are now boarded somewhere in the middle; people with kids get no priority whatsoever; and they have added additional ranks of boarding classes to confuse people - many of whom are already too stupid to board a plane without causing chaos anyway. It's a clusterfuck.
Meanwhile, Southwest get a full flight locked and loaded in a fraction of the time.
That is incorrect, People with disabilities are boarded first along with Military personnel.
Everyone has a boarding group, and they call the group # out and you board. It isn't A,B,C,D..it is 1,2,3,4,5 SWA does a much better job of setting up the boarding process to where the lines don't extend into the concourse and reek havoc, but after that there isn't that much difference.
I have only flown SWA probably 3 times in the last 2 years, I agree with most that their staff is great, but I didn't notice much difference in the seats. I dont have to pay for any bags for me or more wife to be checked, so that isn't a check mark in SWAs favor. I absolutely can't stand that you can't pick your own seat with SWA. I flew in an exit row or bulkhead or 1st for 98% of my UA flights, that is the biggest deal breaker for me when it comes to SWA.
Maybe if I got horrific service over and over I would contemplate switching, but that just hasn't been my experience. If I did switch it would likely be to Delta.